Home / 18,390.38-25,378.72-10,006.94

Finding the Fourth Proportional to 18,390.38, 25,378.72 and 10,006.94

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Solution

The fourth proportional to 18,390.38, 25,378.72 and 10,006.94 is: 13,809.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.38 : 25,378.72 = 10,006.94 : x
  2. Step 2: Convert to fraction form
    18,390.38/25,378.72 = 10,006.94/x
  3. Step 3: Cross multiply
    18,390.38x = 25,378.72 × 10,006.94
  4. Step 4: Simplify right side
    18,390.38x = 253,963,328.32
  5. Step 5: Solve for x
    x = 253,963,328.32/18,390.38
  6. Step 6: Final answer
    x = 13,809.57

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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.