Home / 10,018.08-13,812.12-6,868.80

Finding the Fourth Proportional to 10,018.08, 13,812.12 and 6,868.80

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Solution

The fourth proportional to 10,018.08, 13,812.12 and 6,868.80 is: 9,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,018.08 : 13,812.12 = 6,868.80 : x
  2. Step 2: Convert to fraction form
    10,018.08/13,812.12 = 6,868.80/x
  3. Step 3: Cross multiply
    10,018.08x = 13,812.12 × 6,868.80
  4. Step 4: Simplify right side
    10,018.08x = 94,872,689.86
  5. Step 5: Solve for x
    x = 94,872,689.86/10,018.08
  6. Step 6: Final answer
    x = 9,470.15

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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.