Home / 30,543.82-45,787.51-21,188.22

Finding the Fourth Proportional to 30,543.82, 45,787.51 and 21,188.22

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Solution

The fourth proportional to 30,543.82, 45,787.51 and 21,188.22 is: 31,762.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,543.82 : 45,787.51 = 21,188.22 : x
  2. Step 2: Convert to fraction form
    30,543.82/45,787.51 = 21,188.22/x
  3. Step 3: Cross multiply
    30,543.82x = 45,787.51 × 21,188.22
  4. Step 4: Simplify right side
    30,543.82x = 970,155,689.91
  5. Step 5: Solve for x
    x = 970,155,689.91/30,543.82
  6. Step 6: Final answer
    x = 31,762.75

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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.