Home / 20,587.79-30,881.36-6,547.61

Finding the Fourth Proportional to 20,587.79, 30,881.36 and 6,547.61

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Solution

The fourth proportional to 20,587.79, 30,881.36 and 6,547.61 is: 9,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.79 : 30,881.36 = 6,547.61 : x
  2. Step 2: Convert to fraction form
    20,587.79/30,881.36 = 6,547.61/x
  3. Step 3: Cross multiply
    20,587.79x = 30,881.36 × 6,547.61
  4. Step 4: Simplify right side
    20,587.79x = 202,199,105.66
  5. Step 5: Solve for x
    x = 202,199,105.66/20,587.79
  6. Step 6: Final answer
    x = 9,821.31

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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.