Home / 30,488.64-42,082.08-18,560.28

Finding the Fourth Proportional to 30,488.64, 42,082.08 and 18,560.28

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Solution

The fourth proportional to 30,488.64, 42,082.08 and 18,560.28 is: 25,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,488.64 : 42,082.08 = 18,560.28 : x
  2. Step 2: Convert to fraction form
    30,488.64/42,082.08 = 18,560.28/x
  3. Step 3: Cross multiply
    30,488.64x = 42,082.08 × 18,560.28
  4. Step 4: Simplify right side
    30,488.64x = 781,055,187.78
  5. Step 5: Solve for x
    x = 781,055,187.78/30,488.64
  6. Step 6: Final answer
    x = 25,617.91

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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.