Home / 28,355.02-39,130.07-15,609.47

Finding the Fourth Proportional to 28,355.02, 39,130.07 and 15,609.47

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Solution

The fourth proportional to 28,355.02, 39,130.07 and 15,609.47 is: 21,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.02 : 39,130.07 = 15,609.47 : x
  2. Step 2: Convert to fraction form
    28,355.02/39,130.07 = 15,609.47/x
  3. Step 3: Cross multiply
    28,355.02x = 39,130.07 × 15,609.47
  4. Step 4: Simplify right side
    28,355.02x = 610,799,380.07
  5. Step 5: Solve for x
    x = 610,799,380.07/28,355.02
  6. Step 6: Final answer
    x = 21,541.14

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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.