Home / 28,549.01-42,749.70-19,691.66

Finding the Fourth Proportional to 28,549.01, 42,749.70 and 19,691.66

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Solution

The fourth proportional to 28,549.01, 42,749.70 and 19,691.66 is: 29,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.01 : 42,749.70 = 19,691.66 : x
  2. Step 2: Convert to fraction form
    28,549.01/42,749.70 = 19,691.66/x
  3. Step 3: Cross multiply
    28,549.01x = 42,749.70 × 19,691.66
  4. Step 4: Simplify right side
    28,549.01x = 841,812,405.45
  5. Step 5: Solve for x
    x = 841,812,405.45/28,549.01
  6. Step 6: Final answer
    x = 29,486.57

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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.