Home / 18,385.83-25,373.70-10,428.57

Finding the Fourth Proportional to 18,385.83, 25,373.70 and 10,428.57

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Solution

The fourth proportional to 18,385.83, 25,373.70 and 10,428.57 is: 14,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.83 : 25,373.70 = 10,428.57 : x
  2. Step 2: Convert to fraction form
    18,385.83/25,373.70 = 10,428.57/x
  3. Step 3: Cross multiply
    18,385.83x = 25,373.70 × 10,428.57
  4. Step 4: Simplify right side
    18,385.83x = 264,611,406.61
  5. Step 5: Solve for x
    x = 264,611,406.61/18,385.83
  6. Step 6: Final answer
    x = 14,392.14

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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.