Home / 13,330.67-18,385.19-9,981.46

Finding the Fourth Proportional to 13,330.67, 18,385.19 and 9,981.46

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Solution

The fourth proportional to 13,330.67, 18,385.19 and 9,981.46 is: 13,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.67 : 18,385.19 = 9,981.46 : x
  2. Step 2: Convert to fraction form
    13,330.67/18,385.19 = 9,981.46/x
  3. Step 3: Cross multiply
    13,330.67x = 18,385.19 × 9,981.46
  4. Step 4: Simplify right side
    13,330.67x = 183,510,971.61
  5. Step 5: Solve for x
    x = 183,510,971.61/13,330.67
  6. Step 6: Final answer
    x = 13,766.07

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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.