Home / 20,721,871,465.68-28,596,268,779.30-11,206,423,214.67

Finding the Fourth Proportional to 20,721,871,465.68, 28,596,268,779.30 and 11,206,423,214.67

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Solution

The fourth proportional to 20,721,871,465.68, 28,596,268,779.30 and 11,206,423,214.67 is: 15,464,910,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,871,465.68 : 28,596,268,779.30 = 11,206,423,214.67 : x
  2. Step 2: Convert to fraction form
    20,721,871,465.68/28,596,268,779.30 = 11,206,423,214.67/x
  3. Step 3: Cross multiply
    20,721,871,465.68x = 28,596,268,779.30 × 11,206,423,214.67
  4. Step 4: Simplify right side
    20,721,871,465.68x = 320,461,890,301,290,479,616
  5. Step 5: Solve for x
    x = 320,461,890,301,290,479,616/20,721,871,465.68
  6. Step 6: Final answer
    x = 15,464,910,629.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.