Home / 13,864.86-19,134.28-9,145.80

Finding the Fourth Proportional to 13,864.86, 19,134.28 and 9,145.80

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Solution

The fourth proportional to 13,864.86, 19,134.28 and 9,145.80 is: 12,621.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.86 : 19,134.28 = 9,145.80 : x
  2. Step 2: Convert to fraction form
    13,864.86/19,134.28 = 9,145.80/x
  3. Step 3: Cross multiply
    13,864.86x = 19,134.28 × 9,145.80
  4. Step 4: Simplify right side
    13,864.86x = 174,998,298.02
  5. Step 5: Solve for x
    x = 174,998,298.02/13,864.86
  6. Step 6: Final answer
    x = 12,621.71

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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.