Home / 39,342.79-59,031.63-20,618.38

Finding the Fourth Proportional to 39,342.79, 59,031.63 and 20,618.38

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Solution

The fourth proportional to 39,342.79, 59,031.63 and 20,618.38 is: 30,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.79 : 59,031.63 = 20,618.38 : x
  2. Step 2: Convert to fraction form
    39,342.79/59,031.63 = 20,618.38/x
  3. Step 3: Cross multiply
    39,342.79x = 59,031.63 × 20,618.38
  4. Step 4: Simplify right side
    39,342.79x = 1,217,136,284.20
  5. Step 5: Solve for x
    x = 1,217,136,284.20/39,342.79
  6. Step 6: Final answer
    x = 30,936.70

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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.