Home / 12,981.03-19,471.65-7,134.45

Finding the Fourth Proportional to 12,981.03, 19,471.65 and 7,134.45

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Solution

The fourth proportional to 12,981.03, 19,471.65 and 7,134.45 is: 10,701.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.03 : 19,471.65 = 7,134.45 : x
  2. Step 2: Convert to fraction form
    12,981.03/19,471.65 = 7,134.45/x
  3. Step 3: Cross multiply
    12,981.03x = 19,471.65 × 7,134.45
  4. Step 4: Simplify right side
    12,981.03x = 138,919,513.34
  5. Step 5: Solve for x
    x = 138,919,513.34/12,981.03
  6. Step 6: Final answer
    x = 10,701.73

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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.