Home / 12,117.40-16,715.18-7,080.55

Finding the Fourth Proportional to 12,117.40, 16,715.18 and 7,080.55

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Solution

The fourth proportional to 12,117.40, 16,715.18 and 7,080.55 is: 9,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.40 : 16,715.18 = 7,080.55 : x
  2. Step 2: Convert to fraction form
    12,117.40/16,715.18 = 7,080.55/x
  3. Step 3: Cross multiply
    12,117.40x = 16,715.18 × 7,080.55
  4. Step 4: Simplify right side
    12,117.40x = 118,352,617.11
  5. Step 5: Solve for x
    x = 118,352,617.11/12,117.40
  6. Step 6: Final answer
    x = 9,767.16

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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.