Home / 12,416.64-17,132.80-7,110.40

Finding the Fourth Proportional to 12,416.64, 17,132.80 and 7,110.40

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Solution

The fourth proportional to 12,416.64, 17,132.80 and 7,110.40 is: 9,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.64 : 17,132.80 = 7,110.40 : x
  2. Step 2: Convert to fraction form
    12,416.64/17,132.80 = 7,110.40/x
  3. Step 3: Cross multiply
    12,416.64x = 17,132.80 × 7,110.40
  4. Step 4: Simplify right side
    12,416.64x = 121,821,061.12
  5. Step 5: Solve for x
    x = 121,821,061.12/12,416.64
  6. Step 6: Final answer
    x = 9,811.11

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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.