Home / 13,557.12-18,708.60-7,588.80

Finding the Fourth Proportional to 13,557.12, 18,708.60 and 7,588.80

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Solution

The fourth proportional to 13,557.12, 18,708.60 and 7,588.80 is: 10,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.12 : 18,708.60 = 7,588.80 : x
  2. Step 2: Convert to fraction form
    13,557.12/18,708.60 = 7,588.80/x
  3. Step 3: Cross multiply
    13,557.12x = 18,708.60 × 7,588.80
  4. Step 4: Simplify right side
    13,557.12x = 141,975,823.68
  5. Step 5: Solve for x
    x = 141,975,823.68/13,557.12
  6. Step 6: Final answer
    x = 10,472.42

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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.