Home / 21,230.03-31,814.85-15,639.41

Finding the Fourth Proportional to 21,230.03, 31,814.85 and 15,639.41

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Solution

The fourth proportional to 21,230.03, 31,814.85 and 15,639.41 is: 23,436.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.03 : 31,814.85 = 15,639.41 : x
  2. Step 2: Convert to fraction form
    21,230.03/31,814.85 = 15,639.41/x
  3. Step 3: Cross multiply
    21,230.03x = 31,814.85 × 15,639.41
  4. Step 4: Simplify right side
    21,230.03x = 497,565,483.24
  5. Step 5: Solve for x
    x = 497,565,483.24/21,230.03
  6. Step 6: Final answer
    x = 23,436.87

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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.