Home / 21,538.16-29,714.24-15,886.35

Finding the Fourth Proportional to 21,538.16, 29,714.24 and 15,886.35

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Solution

The fourth proportional to 21,538.16, 29,714.24 and 15,886.35 is: 21,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.16 : 29,714.24 = 15,886.35 : x
  2. Step 2: Convert to fraction form
    21,538.16/29,714.24 = 15,886.35/x
  3. Step 3: Cross multiply
    21,538.16x = 29,714.24 × 15,886.35
  4. Step 4: Simplify right side
    21,538.16x = 472,050,816.62
  5. Step 5: Solve for x
    x = 472,050,816.62/21,538.16
  6. Step 6: Final answer
    x = 21,916.95

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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.