Home / 13,547.40-20,320.96-3,686.60

Finding the Fourth Proportional to 13,547.40, 20,320.96 and 3,686.60

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Solution

The fourth proportional to 13,547.40, 20,320.96 and 3,686.60 is: 5,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.40 : 20,320.96 = 3,686.60 : x
  2. Step 2: Convert to fraction form
    13,547.40/20,320.96 = 3,686.60/x
  3. Step 3: Cross multiply
    13,547.40x = 20,320.96 × 3,686.60
  4. Step 4: Simplify right side
    13,547.40x = 74,915,251.14
  5. Step 5: Solve for x
    x = 74,915,251.14/13,547.40
  6. Step 6: Final answer
    x = 5,529.86

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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.