Home / 28,242.16-38,974.20-15,666.91

Finding the Fourth Proportional to 28,242.16, 38,974.20 and 15,666.91

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Solution

The fourth proportional to 28,242.16, 38,974.20 and 15,666.91 is: 21,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.16 : 38,974.20 = 15,666.91 : x
  2. Step 2: Convert to fraction form
    28,242.16/38,974.20 = 15,666.91/x
  3. Step 3: Cross multiply
    28,242.16x = 38,974.20 × 15,666.91
  4. Step 4: Simplify right side
    28,242.16x = 610,605,283.72
  5. Step 5: Solve for x
    x = 610,605,283.72/28,242.16
  6. Step 6: Final answer
    x = 21,620.35

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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.