Home / 28,098.77-38,776.45-15,352.21

Finding the Fourth Proportional to 28,098.77, 38,776.45 and 15,352.21

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Solution

The fourth proportional to 28,098.77, 38,776.45 and 15,352.21 is: 21,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,098.77 : 38,776.45 = 15,352.21 : x
  2. Step 2: Convert to fraction form
    28,098.77/38,776.45 = 15,352.21/x
  3. Step 3: Cross multiply
    28,098.77x = 38,776.45 × 15,352.21
  4. Step 4: Simplify right side
    28,098.77x = 595,304,203.45
  5. Step 5: Solve for x
    x = 595,304,203.45/28,098.77
  6. Step 6: Final answer
    x = 21,186.13

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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.