Home / 39,278.74-54,204.40-21,373.80

Finding the Fourth Proportional to 39,278.74, 54,204.40 and 21,373.80

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Solution

The fourth proportional to 39,278.74, 54,204.40 and 21,373.80 is: 29,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.74 : 54,204.40 = 21,373.80 : x
  2. Step 2: Convert to fraction form
    39,278.74/54,204.40 = 21,373.80/x
  3. Step 3: Cross multiply
    39,278.74x = 54,204.40 × 21,373.80
  4. Step 4: Simplify right side
    39,278.74x = 1,158,554,004.72
  5. Step 5: Solve for x
    x = 1,158,554,004.72/39,278.74
  6. Step 6: Final answer
    x = 29,495.70

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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.