Home / 28,434.90-42,663.35-11,790.66

Finding the Fourth Proportional to 28,434.90, 42,663.35 and 11,790.66

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Solution

The fourth proportional to 28,434.90, 42,663.35 and 11,790.66 is: 17,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.90 : 42,663.35 = 11,790.66 : x
  2. Step 2: Convert to fraction form
    28,434.90/42,663.35 = 11,790.66/x
  3. Step 3: Cross multiply
    28,434.90x = 42,663.35 × 11,790.66
  4. Step 4: Simplify right side
    28,434.90x = 503,028,995.36
  5. Step 5: Solve for x
    x = 503,028,995.36/28,434.90
  6. Step 6: Final answer
    x = 17,690.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.