Home / 21,518.35-29,682.91-12,565.01

Finding the Fourth Proportional to 21,518.35, 29,682.91 and 12,565.01

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Solution

The fourth proportional to 21,518.35, 29,682.91 and 12,565.01 is: 17,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.35 : 29,682.91 = 12,565.01 : x
  2. Step 2: Convert to fraction form
    21,518.35/29,682.91 = 12,565.01/x
  3. Step 3: Cross multiply
    21,518.35x = 29,682.91 × 12,565.01
  4. Step 4: Simplify right side
    21,518.35x = 372,966,060.98
  5. Step 5: Solve for x
    x = 372,966,060.98/21,518.35
  6. Step 6: Final answer
    x = 17,332.47

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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.