Home / 20,543.82-30,667.12-18,052.70

Finding the Fourth Proportional to 20,543.82, 30,667.12 and 18,052.70

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Solution

The fourth proportional to 20,543.82, 30,667.12 and 18,052.70 is: 26,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.82 : 30,667.12 = 18,052.70 : x
  2. Step 2: Convert to fraction form
    20,543.82/30,667.12 = 18,052.70/x
  3. Step 3: Cross multiply
    20,543.82x = 30,667.12 × 18,052.70
  4. Step 4: Simplify right side
    20,543.82x = 553,624,118.76
  5. Step 5: Solve for x
    x = 553,624,118.76/20,543.82
  6. Step 6: Final answer
    x = 26,948.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.