Home / 10,221.90-14,066.37-9,045.78

Finding the Fourth Proportional to 10,221.90, 14,066.37 and 9,045.78

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Solution

The fourth proportional to 10,221.90, 14,066.37 and 9,045.78 is: 12,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.90 : 14,066.37 = 9,045.78 : x
  2. Step 2: Convert to fraction form
    10,221.90/14,066.37 = 9,045.78/x
  3. Step 3: Cross multiply
    10,221.90x = 14,066.37 × 9,045.78
  4. Step 4: Simplify right side
    10,221.90x = 127,241,288.42
  5. Step 5: Solve for x
    x = 127,241,288.42/10,221.90
  6. Step 6: Final answer
    x = 12,447.91

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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.