Home / 18,838.60-28,261.56-7,160.04

Finding the Fourth Proportional to 18,838.60, 28,261.56 and 7,160.04

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Solution

The fourth proportional to 18,838.60, 28,261.56 and 7,160.04 is: 10,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.60 : 28,261.56 = 7,160.04 : x
  2. Step 2: Convert to fraction form
    18,838.60/28,261.56 = 7,160.04/x
  3. Step 3: Cross multiply
    18,838.60x = 28,261.56 × 7,160.04
  4. Step 4: Simplify right side
    18,838.60x = 202,353,900.06
  5. Step 5: Solve for x
    x = 202,353,900.06/18,838.60
  6. Step 6: Final answer
    x = 10,741.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.