Home / 15,712.08-21,680.16-10,051.85

Finding the Fourth Proportional to 15,712.08, 21,680.16 and 10,051.85

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Solution

The fourth proportional to 15,712.08, 21,680.16 and 10,051.85 is: 13,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,712.08 : 21,680.16 = 10,051.85 : x
  2. Step 2: Convert to fraction form
    15,712.08/21,680.16 = 10,051.85/x
  3. Step 3: Cross multiply
    15,712.08x = 21,680.16 × 10,051.85
  4. Step 4: Simplify right side
    15,712.08x = 217,925,610.85
  5. Step 5: Solve for x
    x = 217,925,610.85/15,712.08
  6. Step 6: Final answer
    x = 13,869.94

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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.