Home / 13,140.04-18,102.45-9,153.94

Finding the Fourth Proportional to 13,140.04, 18,102.45 and 9,153.94

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Solution

The fourth proportional to 13,140.04, 18,102.45 and 9,153.94 is: 12,610.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.04 : 18,102.45 = 9,153.94 : x
  2. Step 2: Convert to fraction form
    13,140.04/18,102.45 = 9,153.94/x
  3. Step 3: Cross multiply
    13,140.04x = 18,102.45 × 9,153.94
  4. Step 4: Simplify right side
    13,140.04x = 165,708,741.15
  5. Step 5: Solve for x
    x = 165,708,741.15/13,140.04
  6. Step 6: Final answer
    x = 12,610.98

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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.