Home / 18,390.57-25,378.81-10,432.86

Finding the Fourth Proportional to 18,390.57, 25,378.81 and 10,432.86

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Solution

The fourth proportional to 18,390.57, 25,378.81 and 10,432.86 is: 14,397.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.57 : 25,378.81 = 10,432.86 : x
  2. Step 2: Convert to fraction form
    18,390.57/25,378.81 = 10,432.86/x
  3. Step 3: Cross multiply
    18,390.57x = 25,378.81 × 10,432.86
  4. Step 4: Simplify right side
    18,390.57x = 264,773,571.70
  5. Step 5: Solve for x
    x = 264,773,571.70/18,390.57
  6. Step 6: Final answer
    x = 14,397.25

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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.