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Finding the Fourth Proportional to 16,312.32, 22,510.40 and 8,860.16

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Solution

The fourth proportional to 16,312.32, 22,510.40 and 8,860.16 is: 12,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,312.32 : 22,510.40 = 8,860.16 : x
  2. Step 2: Convert to fraction form
    16,312.32/22,510.40 = 8,860.16/x
  3. Step 3: Cross multiply
    16,312.32x = 22,510.40 × 8,860.16
  4. Step 4: Simplify right side
    16,312.32x = 199,445,745.66
  5. Step 5: Solve for x
    x = 199,445,745.66/16,312.32
  6. Step 6: Final answer
    x = 12,226.69

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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.