Home / 29,307.12-40,443.21-15,877.86

Finding the Fourth Proportional to 29,307.12, 40,443.21 and 15,877.86

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Solution

The fourth proportional to 29,307.12, 40,443.21 and 15,877.86 is: 21,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,307.12 : 40,443.21 = 15,877.86 : x
  2. Step 2: Convert to fraction form
    29,307.12/40,443.21 = 15,877.86/x
  3. Step 3: Cross multiply
    29,307.12x = 40,443.21 × 15,877.86
  4. Step 4: Simplify right side
    29,307.12x = 642,151,626.33
  5. Step 5: Solve for x
    x = 642,151,626.33/29,307.12
  6. Step 6: Final answer
    x = 21,911.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.