Home / 13,750.64-18,975.72-8,089.04

Finding the Fourth Proportional to 13,750.64, 18,975.72 and 8,089.04

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Solution

The fourth proportional to 13,750.64, 18,975.72 and 8,089.04 is: 11,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.64 : 18,975.72 = 8,089.04 : x
  2. Step 2: Convert to fraction form
    13,750.64/18,975.72 = 8,089.04/x
  3. Step 3: Cross multiply
    13,750.64x = 18,975.72 × 8,089.04
  4. Step 4: Simplify right side
    13,750.64x = 153,495,358.11
  5. Step 5: Solve for x
    x = 153,495,358.11/13,750.64
  6. Step 6: Final answer
    x = 11,162.78

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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.