Home / 28,489.02-39,317.14-15,743.32

Finding the Fourth Proportional to 28,489.02, 39,317.14 and 15,743.32

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Solution

The fourth proportional to 28,489.02, 39,317.14 and 15,743.32 is: 21,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.02 : 39,317.14 = 15,743.32 : x
  2. Step 2: Convert to fraction form
    28,489.02/39,317.14 = 15,743.32/x
  3. Step 3: Cross multiply
    28,489.02x = 39,317.14 × 15,743.32
  4. Step 4: Simplify right side
    28,489.02x = 618,982,316.50
  5. Step 5: Solve for x
    x = 618,982,316.50/28,489.02
  6. Step 6: Final answer
    x = 21,727.05

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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.