Home / 13,902.28-20,816.70-9,747.40

Finding the Fourth Proportional to 13,902.28, 20,816.70 and 9,747.40

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Solution

The fourth proportional to 13,902.28, 20,816.70 and 9,747.40 is: 14,595.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.28 : 20,816.70 = 9,747.40 : x
  2. Step 2: Convert to fraction form
    13,902.28/20,816.70 = 9,747.40/x
  3. Step 3: Cross multiply
    13,902.28x = 20,816.70 × 9,747.40
  4. Step 4: Simplify right side
    13,902.28x = 202,908,701.58
  5. Step 5: Solve for x
    x = 202,908,701.58/13,902.28
  6. Step 6: Final answer
    x = 14,595.35

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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.