Home / 13,279.32-18,325.04-7,901.73

Finding the Fourth Proportional to 13,279.32, 18,325.04 and 7,901.73

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Solution

The fourth proportional to 13,279.32, 18,325.04 and 7,901.73 is: 10,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.32 : 18,325.04 = 7,901.73 : x
  2. Step 2: Convert to fraction form
    13,279.32/18,325.04 = 7,901.73/x
  3. Step 3: Cross multiply
    13,279.32x = 18,325.04 × 7,901.73
  4. Step 4: Simplify right side
    13,279.32x = 144,799,478.81
  5. Step 5: Solve for x
    x = 144,799,478.81/13,279.32
  6. Step 6: Final answer
    x = 10,904.13

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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.