Home / 18,972.48-28,402.56-12,401.76

Finding the Fourth Proportional to 18,972.48, 28,402.56 and 12,401.76

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Solution

The fourth proportional to 18,972.48, 28,402.56 and 12,401.76 is: 18,565.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.48 : 28,402.56 = 12,401.76 : x
  2. Step 2: Convert to fraction form
    18,972.48/28,402.56 = 12,401.76/x
  3. Step 3: Cross multiply
    18,972.48x = 28,402.56 × 12,401.76
  4. Step 4: Simplify right side
    18,972.48x = 352,241,732.51
  5. Step 5: Solve for x
    x = 352,241,732.51/18,972.48
  6. Step 6: Final answer
    x = 18,565.93

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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.