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Finding the Fourth Proportional to 14,640.87, 21,966.40 and 10,642.01

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Solution

The fourth proportional to 14,640.87, 21,966.40 and 10,642.01 is: 15,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.87 : 21,966.40 = 10,642.01 : x
  2. Step 2: Convert to fraction form
    14,640.87/21,966.40 = 10,642.01/x
  3. Step 3: Cross multiply
    14,640.87x = 21,966.40 × 10,642.01
  4. Step 4: Simplify right side
    14,640.87x = 233,766,512.03
  5. Step 5: Solve for x
    x = 233,766,512.03/14,640.87
  6. Step 6: Final answer
    x = 15,966.70

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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.