Home / 28,490.02-39,316.55-15,743.15

Finding the Fourth Proportional to 28,490.02, 39,316.55 and 15,743.15

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Solution

The fourth proportional to 28,490.02, 39,316.55 and 15,743.15 is: 21,725.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.02 : 39,316.55 = 15,743.15 : x
  2. Step 2: Convert to fraction form
    28,490.02/39,316.55 = 15,743.15/x
  3. Step 3: Cross multiply
    28,490.02x = 39,316.55 × 15,743.15
  4. Step 4: Simplify right side
    28,490.02x = 618,966,344.13
  5. Step 5: Solve for x
    x = 618,966,344.13/28,490.02
  6. Step 6: Final answer
    x = 21,725.73

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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.