Home / 39,031.07-53,862.78-21,125.93

Finding the Fourth Proportional to 39,031.07, 53,862.78 and 21,125.93

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Solution

The fourth proportional to 39,031.07, 53,862.78 and 21,125.93 is: 29,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.07 : 53,862.78 = 21,125.93 : x
  2. Step 2: Convert to fraction form
    39,031.07/53,862.78 = 21,125.93/x
  3. Step 3: Cross multiply
    39,031.07x = 53,862.78 × 21,125.93
  4. Step 4: Simplify right side
    39,031.07x = 1,137,901,533.76
  5. Step 5: Solve for x
    x = 1,137,901,533.76/39,031.07
  6. Step 6: Final answer
    x = 29,153.73

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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.