Home / 12,005.11-16,560.34-9,315.10

Finding the Fourth Proportional to 12,005.11, 16,560.34 and 9,315.10

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Solution

The fourth proportional to 12,005.11, 16,560.34 and 9,315.10 is: 12,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.11 : 16,560.34 = 9,315.10 : x
  2. Step 2: Convert to fraction form
    12,005.11/16,560.34 = 9,315.10/x
  3. Step 3: Cross multiply
    12,005.11x = 16,560.34 × 9,315.10
  4. Step 4: Simplify right side
    12,005.11x = 154,261,223.13
  5. Step 5: Solve for x
    x = 154,261,223.13/12,005.11
  6. Step 6: Final answer
    x = 12,849.63

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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.