Home / 28,254.89-42,389.42-19,951.11

Finding the Fourth Proportional to 28,254.89, 42,389.42 and 19,951.11

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Solution

The fourth proportional to 28,254.89, 42,389.42 and 19,951.11 is: 29,931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.89 : 42,389.42 = 19,951.11 : x
  2. Step 2: Convert to fraction form
    28,254.89/42,389.42 = 19,951.11/x
  3. Step 3: Cross multiply
    28,254.89x = 42,389.42 × 19,951.11
  4. Step 4: Simplify right side
    28,254.89x = 845,715,981.26
  5. Step 5: Solve for x
    x = 845,715,981.26/28,254.89
  6. Step 6: Final answer
    x = 29,931.67

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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.