Home / 28,628.10-39,452.40-20,656.08

Finding the Fourth Proportional to 28,628.10, 39,452.40 and 20,656.08

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Solution

The fourth proportional to 28,628.10, 39,452.40 and 20,656.08 is: 28,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.10 : 39,452.40 = 20,656.08 : x
  2. Step 2: Convert to fraction form
    28,628.10/39,452.40 = 20,656.08/x
  3. Step 3: Cross multiply
    28,628.10x = 39,452.40 × 20,656.08
  4. Step 4: Simplify right side
    28,628.10x = 814,931,930.59
  5. Step 5: Solve for x
    x = 814,931,930.59/28,628.10
  6. Step 6: Final answer
    x = 28,466.15

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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.