Home / 13,155.55-18,154.35-7,187.24

Finding the Fourth Proportional to 13,155.55, 18,154.35 and 7,187.24

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Solution

The fourth proportional to 13,155.55, 18,154.35 and 7,187.24 is: 9,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.55 : 18,154.35 = 7,187.24 : x
  2. Step 2: Convert to fraction form
    13,155.55/18,154.35 = 7,187.24/x
  3. Step 3: Cross multiply
    13,155.55x = 18,154.35 × 7,187.24
  4. Step 4: Simplify right side
    13,155.55x = 130,479,670.49
  5. Step 5: Solve for x
    x = 130,479,670.49/13,155.55
  6. Step 6: Final answer
    x = 9,918.22

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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.