Home / 21,247.50-31,875.05-8,760.58

Finding the Fourth Proportional to 21,247.50, 31,875.05 and 8,760.58

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Solution

The fourth proportional to 21,247.50, 31,875.05 and 8,760.58 is: 13,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.50 : 31,875.05 = 8,760.58 : x
  2. Step 2: Convert to fraction form
    21,247.50/31,875.05 = 8,760.58/x
  3. Step 3: Cross multiply
    21,247.50x = 31,875.05 × 8,760.58
  4. Step 4: Simplify right side
    21,247.50x = 279,243,925.53
  5. Step 5: Solve for x
    x = 279,243,925.53/21,247.50
  6. Step 6: Final answer
    x = 13,142.44

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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.