Home / 20,607.16-28,437.84-11,175.72

Finding the Fourth Proportional to 20,607.16, 28,437.84 and 11,175.72

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Solution

The fourth proportional to 20,607.16, 28,437.84 and 11,175.72 is: 15,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.16 : 28,437.84 = 11,175.72 : x
  2. Step 2: Convert to fraction form
    20,607.16/28,437.84 = 11,175.72/x
  3. Step 3: Cross multiply
    20,607.16x = 28,437.84 × 11,175.72
  4. Step 4: Simplify right side
    20,607.16x = 317,813,337.24
  5. Step 5: Solve for x
    x = 317,813,337.24/20,607.16
  6. Step 6: Final answer
    x = 15,422.47

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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.