Home / 38,279.78-57,391.95-11,970.26

Finding the Fourth Proportional to 38,279.78, 57,391.95 and 11,970.26

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Solution

The fourth proportional to 38,279.78, 57,391.95 and 11,970.26 is: 17,946.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,279.78 : 57,391.95 = 11,970.26 : x
  2. Step 2: Convert to fraction form
    38,279.78/57,391.95 = 11,970.26/x
  3. Step 3: Cross multiply
    38,279.78x = 57,391.95 × 11,970.26
  4. Step 4: Simplify right side
    38,279.78x = 686,996,563.41
  5. Step 5: Solve for x
    x = 686,996,563.41/38,279.78
  6. Step 6: Final answer
    x = 17,946.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.