Home / 13,056.09-18,017.43-7,087.78

Finding the Fourth Proportional to 13,056.09, 18,017.43 and 7,087.78

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Solution

The fourth proportional to 13,056.09, 18,017.43 and 7,087.78 is: 9,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.09 : 18,017.43 = 7,087.78 : x
  2. Step 2: Convert to fraction form
    13,056.09/18,017.43 = 7,087.78/x
  3. Step 3: Cross multiply
    13,056.09x = 18,017.43 × 7,087.78
  4. Step 4: Simplify right side
    13,056.09x = 127,703,580.01
  5. Step 5: Solve for x
    x = 127,703,580.01/13,056.09
  6. Step 6: Final answer
    x = 9,781.15

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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.