Home / 39,031.61-53,863.62-21,126.76

Finding the Fourth Proportional to 39,031.61, 53,863.62 and 21,126.76

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Solution

The fourth proportional to 39,031.61, 53,863.62 and 21,126.76 is: 29,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.61 : 53,863.62 = 21,126.76 : x
  2. Step 2: Convert to fraction form
    39,031.61/53,863.62 = 21,126.76/x
  3. Step 3: Cross multiply
    39,031.61x = 53,863.62 × 21,126.76
  4. Step 4: Simplify right side
    39,031.61x = 1,137,963,772.47
  5. Step 5: Solve for x
    x = 1,137,963,772.47/39,031.61
  6. Step 6: Final answer
    x = 29,154.93

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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.