Home / 39,342.88-59,031.76-20,618.47

Finding the Fourth Proportional to 39,342.88, 59,031.76 and 20,618.47

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Solution

The fourth proportional to 39,342.88, 59,031.76 and 20,618.47 is: 30,936.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.88 : 59,031.76 = 20,618.47 : x
  2. Step 2: Convert to fraction form
    39,342.88/59,031.76 = 20,618.47/x
  3. Step 3: Cross multiply
    39,342.88x = 59,031.76 × 20,618.47
  4. Step 4: Simplify right side
    39,342.88x = 1,217,144,359.45
  5. Step 5: Solve for x
    x = 1,217,144,359.45/39,342.88
  6. Step 6: Final answer
    x = 30,936.84

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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.