Home / 21,096.84-31,552.20-18,773.40

Finding the Fourth Proportional to 21,096.84, 31,552.20 and 18,773.40

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Solution

The fourth proportional to 21,096.84, 31,552.20 and 18,773.40 is: 28,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096.84 : 31,552.20 = 18,773.40 : x
  2. Step 2: Convert to fraction form
    21,096.84/31,552.20 = 18,773.40/x
  3. Step 3: Cross multiply
    21,096.84x = 31,552.20 × 18,773.40
  4. Step 4: Simplify right side
    21,096.84x = 592,342,071.48
  5. Step 5: Solve for x
    x = 592,342,071.48/21,096.84
  6. Step 6: Final answer
    x = 28,077.29

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1.5x scale

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.