Home / 21,051.48-29,049.12-13,484.40

Finding the Fourth Proportional to 21,051.48, 29,049.12 and 13,484.40

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Solution

The fourth proportional to 21,051.48, 29,049.12 and 13,484.40 is: 18,607.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.48 : 29,049.12 = 13,484.40 : x
  2. Step 2: Convert to fraction form
    21,051.48/29,049.12 = 13,484.40/x
  3. Step 3: Cross multiply
    21,051.48x = 29,049.12 × 13,484.40
  4. Step 4: Simplify right side
    21,051.48x = 391,709,953.73
  5. Step 5: Solve for x
    x = 391,709,953.73/21,051.48
  6. Step 6: Final answer
    x = 18,607.24

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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.