Home / 12,445.65-17,184.15-8,465.31

Finding the Fourth Proportional to 12,445.65, 17,184.15 and 8,465.31

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Solution

The fourth proportional to 12,445.65, 17,184.15 and 8,465.31 is: 11,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.65 : 17,184.15 = 8,465.31 : x
  2. Step 2: Convert to fraction form
    12,445.65/17,184.15 = 8,465.31/x
  3. Step 3: Cross multiply
    12,445.65x = 17,184.15 × 8,465.31
  4. Step 4: Simplify right side
    12,445.65x = 145,469,156.84
  5. Step 5: Solve for x
    x = 145,469,156.84/12,445.65
  6. Step 6: Final answer
    x = 11,688.35

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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.