Home / 21,901.35-32,810.47-12,997.87

Finding the Fourth Proportional to 21,901.35, 32,810.47 and 12,997.87

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Solution

The fourth proportional to 21,901.35, 32,810.47 and 12,997.87 is: 19,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.35 : 32,810.47 = 12,997.87 : x
  2. Step 2: Convert to fraction form
    21,901.35/32,810.47 = 12,997.87/x
  3. Step 3: Cross multiply
    21,901.35x = 32,810.47 × 12,997.87
  4. Step 4: Simplify right side
    21,901.35x = 426,466,109.18
  5. Step 5: Solve for x
    x = 426,466,109.18/21,901.35
  6. Step 6: Final answer
    x = 19,472.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.