Home / 39,031.03-53,862.96-21,126.25

Finding the Fourth Proportional to 39,031.03, 53,862.96 and 21,126.25

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Solution

The fourth proportional to 39,031.03, 53,862.96 and 21,126.25 is: 29,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.03 : 53,862.96 = 21,126.25 : x
  2. Step 2: Convert to fraction form
    39,031.03/53,862.96 = 21,126.25/x
  3. Step 3: Cross multiply
    39,031.03x = 53,862.96 × 21,126.25
  4. Step 4: Simplify right side
    39,031.03x = 1,137,922,358.70
  5. Step 5: Solve for x
    x = 1,137,922,358.70/39,031.03
  6. Step 6: Final answer
    x = 29,154.30

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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.