Home / 39,141.60-58,712.40-11,439.60

Finding the Fourth Proportional to 39,141.60, 58,712.40 and 11,439.60

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Solution

The fourth proportional to 39,141.60, 58,712.40 and 11,439.60 is: 17,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,141.60 : 58,712.40 = 11,439.60 : x
  2. Step 2: Convert to fraction form
    39,141.60/58,712.40 = 11,439.60/x
  3. Step 3: Cross multiply
    39,141.60x = 58,712.40 × 11,439.60
  4. Step 4: Simplify right side
    39,141.60x = 671,646,371.04
  5. Step 5: Solve for x
    x = 671,646,371.04/39,141.60
  6. Step 6: Final answer
    x = 17,159.40

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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.