Home / 12,356.64-18,510.26-7,423.61

Finding the Fourth Proportional to 12,356.64, 18,510.26 and 7,423.61

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Solution

The fourth proportional to 12,356.64, 18,510.26 and 7,423.61 is: 11,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.64 : 18,510.26 = 7,423.61 : x
  2. Step 2: Convert to fraction form
    12,356.64/18,510.26 = 7,423.61/x
  3. Step 3: Cross multiply
    12,356.64x = 18,510.26 × 7,423.61
  4. Step 4: Simplify right side
    12,356.64x = 137,412,821.57
  5. Step 5: Solve for x
    x = 137,412,821.57/12,356.64
  6. Step 6: Final answer
    x = 11,120.57

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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.