Home / 32,720.07-45,140.25-20,779.05

Finding the Fourth Proportional to 32,720.07, 45,140.25 and 20,779.05

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Solution

The fourth proportional to 32,720.07, 45,140.25 and 20,779.05 is: 28,666.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,720.07 : 45,140.25 = 20,779.05 : x
  2. Step 2: Convert to fraction form
    32,720.07/45,140.25 = 20,779.05/x
  3. Step 3: Cross multiply
    32,720.07x = 45,140.25 × 20,779.05
  4. Step 4: Simplify right side
    32,720.07x = 937,971,511.76
  5. Step 5: Solve for x
    x = 937,971,511.76/32,720.07
  6. Step 6: Final answer
    x = 28,666.55

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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.