Home / 39,031.63-53,863.81-21,126.62

Finding the Fourth Proportional to 39,031.63, 53,863.81 and 21,126.62

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Solution

The fourth proportional to 39,031.63, 53,863.81 and 21,126.62 is: 29,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.63 : 53,863.81 = 21,126.62 : x
  2. Step 2: Convert to fraction form
    39,031.63/53,863.81 = 21,126.62/x
  3. Step 3: Cross multiply
    39,031.63x = 53,863.81 × 21,126.62
  4. Step 4: Simplify right side
    39,031.63x = 1,137,960,327.47
  5. Step 5: Solve for x
    x = 1,137,960,327.47/39,031.63
  6. Step 6: Final answer
    x = 29,154.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.