Home / 12,378.77-18,574.28-5,805.46

Finding the Fourth Proportional to 12,378.77, 18,574.28 and 5,805.46

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Solution

The fourth proportional to 12,378.77, 18,574.28 and 5,805.46 is: 8,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.77 : 18,574.28 = 5,805.46 : x
  2. Step 2: Convert to fraction form
    12,378.77/18,574.28 = 5,805.46/x
  3. Step 3: Cross multiply
    12,378.77x = 18,574.28 × 5,805.46
  4. Step 4: Simplify right side
    12,378.77x = 107,832,239.57
  5. Step 5: Solve for x
    x = 107,832,239.57/12,378.77
  6. Step 6: Final answer
    x = 8,711.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.