Home / 18,637.20-25,719.30-10,679.40

Finding the Fourth Proportional to 18,637.20, 25,719.30 and 10,679.40

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Solution

The fourth proportional to 18,637.20, 25,719.30 and 10,679.40 is: 14,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.20 : 25,719.30 = 10,679.40 : x
  2. Step 2: Convert to fraction form
    18,637.20/25,719.30 = 10,679.40/x
  3. Step 3: Cross multiply
    18,637.20x = 25,719.30 × 10,679.40
  4. Step 4: Simplify right side
    18,637.20x = 274,666,692.42
  5. Step 5: Solve for x
    x = 274,666,692.42/18,637.20
  6. Step 6: Final answer
    x = 14,737.55

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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.