Home / 19,660.61-27,140.84-12,591.07

Finding the Fourth Proportional to 19,660.61, 27,140.84 and 12,591.07

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Solution

The fourth proportional to 19,660.61, 27,140.84 and 12,591.07 is: 17,381.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.61 : 27,140.84 = 12,591.07 : x
  2. Step 2: Convert to fraction form
    19,660.61/27,140.84 = 12,591.07/x
  3. Step 3: Cross multiply
    19,660.61x = 27,140.84 × 12,591.07
  4. Step 4: Simplify right side
    19,660.61x = 341,732,132.71
  5. Step 5: Solve for x
    x = 341,732,132.71/19,660.61
  6. Step 6: Final answer
    x = 17,381.56

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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.