Home / 39,403.23-54,375.40-21,498.23

Finding the Fourth Proportional to 39,403.23, 54,375.40 and 21,498.23

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Solution

The fourth proportional to 39,403.23, 54,375.40 and 21,498.23 is: 29,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,403.23 : 54,375.40 = 21,498.23 : x
  2. Step 2: Convert to fraction form
    39,403.23/54,375.40 = 21,498.23/x
  3. Step 3: Cross multiply
    39,403.23x = 54,375.40 × 21,498.23
  4. Step 4: Simplify right side
    39,403.23x = 1,168,974,712.49
  5. Step 5: Solve for x
    x = 1,168,974,712.49/39,403.23
  6. Step 6: Final answer
    x = 29,666.98

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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.