Home / 39,387.60-59,081.40-11,685.60

Finding the Fourth Proportional to 39,387.60, 59,081.40 and 11,685.60

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Solution

The fourth proportional to 39,387.60, 59,081.40 and 11,685.60 is: 17,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.60 : 59,081.40 = 11,685.60 : x
  2. Step 2: Convert to fraction form
    39,387.60/59,081.40 = 11,685.60/x
  3. Step 3: Cross multiply
    39,387.60x = 59,081.40 × 11,685.60
  4. Step 4: Simplify right side
    39,387.60x = 690,401,607.84
  5. Step 5: Solve for x
    x = 690,401,607.84/39,387.60
  6. Step 6: Final answer
    x = 17,528.40

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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.