Home / 39,031.35-53,863.35-21,126.51

Finding the Fourth Proportional to 39,031.35, 53,863.35 and 21,126.51

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Solution

The fourth proportional to 39,031.35, 53,863.35 and 21,126.51 is: 29,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.35 : 53,863.35 = 21,126.51 : x
  2. Step 2: Convert to fraction form
    39,031.35/53,863.35 = 21,126.51/x
  3. Step 3: Cross multiply
    39,031.35x = 53,863.35 × 21,126.51
  4. Step 4: Simplify right side
    39,031.35x = 1,137,944,602.41
  5. Step 5: Solve for x
    x = 1,137,944,602.41/39,031.35
  6. Step 6: Final answer
    x = 29,154.63

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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.