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Finding the Fourth Proportional to 13,070.14, 18,036.96 and 7,101.90

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Solution

The fourth proportional to 13,070.14, 18,036.96 and 7,101.90 is: 9,800.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.14 : 18,036.96 = 7,101.90 : x
  2. Step 2: Convert to fraction form
    13,070.14/18,036.96 = 7,101.90/x
  3. Step 3: Cross multiply
    13,070.14x = 18,036.96 × 7,101.90
  4. Step 4: Simplify right side
    13,070.14x = 128,096,686.22
  5. Step 5: Solve for x
    x = 128,096,686.22/13,070.14
  6. Step 6: Final answer
    x = 9,800.71

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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.