Home / 38,130.78-57,195.36-10,428.78

Finding the Fourth Proportional to 38,130.78, 57,195.36 and 10,428.78

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Solution

The fourth proportional to 38,130.78, 57,195.36 and 10,428.78 is: 15,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.78 : 57,195.36 = 10,428.78 : x
  2. Step 2: Convert to fraction form
    38,130.78/57,195.36 = 10,428.78/x
  3. Step 3: Cross multiply
    38,130.78x = 57,195.36 × 10,428.78
  4. Step 4: Simplify right side
    38,130.78x = 596,477,826.46
  5. Step 5: Solve for x
    x = 596,477,826.46/38,130.78
  6. Step 6: Final answer
    x = 15,642.95

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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.