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Finding the Fourth Proportional to 13,070.39, 18,036.81 and 7,101.90

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Solution

The fourth proportional to 13,070.39, 18,036.81 and 7,101.90 is: 9,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.39 : 18,036.81 = 7,101.90 : x
  2. Step 2: Convert to fraction form
    13,070.39/18,036.81 = 7,101.90/x
  3. Step 3: Cross multiply
    13,070.39x = 18,036.81 × 7,101.90
  4. Step 4: Simplify right side
    13,070.39x = 128,095,620.94
  5. Step 5: Solve for x
    x = 128,095,620.94/13,070.39
  6. Step 6: Final answer
    x = 9,800.45

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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.