Home / 25,158.20-34,718.37-13,980.20

Finding the Fourth Proportional to 25,158.20, 34,718.37 and 13,980.20

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Solution

The fourth proportional to 25,158.20, 34,718.37 and 13,980.20 is: 19,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,158.20 : 34,718.37 = 13,980.20 : x
  2. Step 2: Convert to fraction form
    25,158.20/34,718.37 = 13,980.20/x
  3. Step 3: Cross multiply
    25,158.20x = 34,718.37 × 13,980.20
  4. Step 4: Simplify right side
    25,158.20x = 485,369,582.68
  5. Step 5: Solve for x
    x = 485,369,582.68/25,158.20
  6. Step 6: Final answer
    x = 19,292.70

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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.