Home / 39,030.61-53,862.24-21,125.76

Finding the Fourth Proportional to 39,030.61, 53,862.24 and 21,125.76

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Solution

The fourth proportional to 39,030.61, 53,862.24 and 21,125.76 is: 29,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,030.61 : 53,862.24 = 21,125.76 : x
  2. Step 2: Convert to fraction form
    39,030.61/53,862.24 = 21,125.76/x
  3. Step 3: Cross multiply
    39,030.61x = 53,862.24 × 21,125.76
  4. Step 4: Simplify right side
    39,030.61x = 1,137,880,876.10
  5. Step 5: Solve for x
    x = 1,137,880,876.10/39,030.61
  6. Step 6: Final answer
    x = 29,153.55

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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.