Home / 21,587.02-29,791.15-12,156.62

Finding the Fourth Proportional to 21,587.02, 29,791.15 and 12,156.62

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Solution

The fourth proportional to 21,587.02, 29,791.15 and 12,156.62 is: 16,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.02 : 29,791.15 = 12,156.62 : x
  2. Step 2: Convert to fraction form
    21,587.02/29,791.15 = 12,156.62/x
  3. Step 3: Cross multiply
    21,587.02x = 29,791.15 × 12,156.62
  4. Step 4: Simplify right side
    21,587.02x = 362,159,689.91
  5. Step 5: Solve for x
    x = 362,159,689.91/21,587.02
  6. Step 6: Final answer
    x = 16,776.73

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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.