Home / 19,531.50-29,298.75-6,385.20

Finding the Fourth Proportional to 19,531.50, 29,298.75 and 6,385.20

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Solution

The fourth proportional to 19,531.50, 29,298.75 and 6,385.20 is: 9,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,531.50 : 29,298.75 = 6,385.20 : x
  2. Step 2: Convert to fraction form
    19,531.50/29,298.75 = 6,385.20/x
  3. Step 3: Cross multiply
    19,531.50x = 29,298.75 × 6,385.20
  4. Step 4: Simplify right side
    19,531.50x = 187,078,378.50
  5. Step 5: Solve for x
    x = 187,078,378.50/19,531.50
  6. Step 6: Final answer
    x = 9,578.29

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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.