Home / 21,285.90-29,371.98-12,332.16

Finding the Fourth Proportional to 21,285.90, 29,371.98 and 12,332.16

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Solution

The fourth proportional to 21,285.90, 29,371.98 and 12,332.16 is: 17,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.90 : 29,371.98 = 12,332.16 : x
  2. Step 2: Convert to fraction form
    21,285.90/29,371.98 = 12,332.16/x
  3. Step 3: Cross multiply
    21,285.90x = 29,371.98 × 12,332.16
  4. Step 4: Simplify right side
    21,285.90x = 362,219,956.88
  5. Step 5: Solve for x
    x = 362,219,956.88/21,285.90
  6. Step 6: Final answer
    x = 17,016.90

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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.