Home / 39,342.64-59,019.78-12,679.70

Finding the Fourth Proportional to 39,342.64, 59,019.78 and 12,679.70

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Solution

The fourth proportional to 39,342.64, 59,019.78 and 12,679.70 is: 19,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.64 : 59,019.78 = 12,679.70 : x
  2. Step 2: Convert to fraction form
    39,342.64/59,019.78 = 12,679.70/x
  3. Step 3: Cross multiply
    39,342.64x = 59,019.78 × 12,679.70
  4. Step 4: Simplify right side
    39,342.64x = 748,353,104.47
  5. Step 5: Solve for x
    x = 748,353,104.47/39,342.64
  6. Step 6: Final answer
    x = 19,021.43

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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.