Home / 21,207.18-29,259.12-12,253.50

Finding the Fourth Proportional to 21,207.18, 29,259.12 and 12,253.50

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Solution

The fourth proportional to 21,207.18, 29,259.12 and 12,253.50 is: 16,905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.18 : 29,259.12 = 12,253.50 : x
  2. Step 2: Convert to fraction form
    21,207.18/29,259.12 = 12,253.50/x
  3. Step 3: Cross multiply
    21,207.18x = 29,259.12 × 12,253.50
  4. Step 4: Simplify right side
    21,207.18x = 358,526,626.92
  5. Step 5: Solve for x
    x = 358,526,626.92/21,207.18
  6. Step 6: Final answer
    x = 16,905.91

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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.