Home / 28,395.14-42,538.11-15,877.20

Finding the Fourth Proportional to 28,395.14, 42,538.11 and 15,877.20

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Solution

The fourth proportional to 28,395.14, 42,538.11 and 15,877.20 is: 23,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.14 : 42,538.11 = 15,877.20 : x
  2. Step 2: Convert to fraction form
    28,395.14/42,538.11 = 15,877.20/x
  3. Step 3: Cross multiply
    28,395.14x = 42,538.11 × 15,877.20
  4. Step 4: Simplify right side
    28,395.14x = 675,386,080.09
  5. Step 5: Solve for x
    x = 675,386,080.09/28,395.14
  6. Step 6: Final answer
    x = 23,785.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.