Home / 20,489.36-30,732.66-5,698.40

Finding the Fourth Proportional to 20,489.36, 30,732.66 and 5,698.40

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Solution

The fourth proportional to 20,489.36, 30,732.66 and 5,698.40 is: 8,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.36 : 30,732.66 = 5,698.40 : x
  2. Step 2: Convert to fraction form
    20,489.36/30,732.66 = 5,698.40/x
  3. Step 3: Cross multiply
    20,489.36x = 30,732.66 × 5,698.40
  4. Step 4: Simplify right side
    20,489.36x = 175,126,836.08
  5. Step 5: Solve for x
    x = 175,126,836.08/20,489.36
  6. Step 6: Final answer
    x = 8,547.21

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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.