Home / 13,097.40-18,071.45-10,981.47

Finding the Fourth Proportional to 13,097.40, 18,071.45 and 10,981.47

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Solution

The fourth proportional to 13,097.40, 18,071.45 and 10,981.47 is: 15,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,097.40 : 18,071.45 = 10,981.47 : x
  2. Step 2: Convert to fraction form
    13,097.40/18,071.45 = 10,981.47/x
  3. Step 3: Cross multiply
    13,097.40x = 18,071.45 × 10,981.47
  4. Step 4: Simplify right side
    13,097.40x = 198,451,201.84
  5. Step 5: Solve for x
    x = 198,451,201.84/13,097.40
  6. Step 6: Final answer
    x = 15,151.96

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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.