Home / 12,920.48-19,334.55-10,127.95

Finding the Fourth Proportional to 12,920.48, 19,334.55 and 10,127.95

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Solution

The fourth proportional to 12,920.48, 19,334.55 and 10,127.95 is: 15,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.48 : 19,334.55 = 10,127.95 : x
  2. Step 2: Convert to fraction form
    12,920.48/19,334.55 = 10,127.95/x
  3. Step 3: Cross multiply
    12,920.48x = 19,334.55 × 10,127.95
  4. Step 4: Simplify right side
    12,920.48x = 195,819,397.10
  5. Step 5: Solve for x
    x = 195,819,397.10/12,920.48
  6. Step 6: Final answer
    x = 15,155.74

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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.