Home / 28,562.16-39,415.56-15,987.12

Finding the Fourth Proportional to 28,562.16, 39,415.56 and 15,987.12

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Solution

The fourth proportional to 28,562.16, 39,415.56 and 15,987.12 is: 22,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.16 : 39,415.56 = 15,987.12 : x
  2. Step 2: Convert to fraction form
    28,562.16/39,415.56 = 15,987.12/x
  3. Step 3: Cross multiply
    28,562.16x = 39,415.56 × 15,987.12
  4. Step 4: Simplify right side
    28,562.16x = 630,141,287.59
  5. Step 5: Solve for x
    x = 630,141,287.59/28,562.16
  6. Step 6: Final answer
    x = 22,062.10

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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.