Home / 18,343.61-25,312.59-10,685.69

Finding the Fourth Proportional to 18,343.61, 25,312.59 and 10,685.69

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Solution

The fourth proportional to 18,343.61, 25,312.59 and 10,685.69 is: 14,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.61 : 25,312.59 = 10,685.69 : x
  2. Step 2: Convert to fraction form
    18,343.61/25,312.59 = 10,685.69/x
  3. Step 3: Cross multiply
    18,343.61x = 25,312.59 × 10,685.69
  4. Step 4: Simplify right side
    18,343.61x = 270,482,363.27
  5. Step 5: Solve for x
    x = 270,482,363.27/18,343.61
  6. Step 6: Final answer
    x = 14,745.32

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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.