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Finding the Fourth Proportional to 18,698.48, 28,042.92 and 5,547.76

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Solution

The fourth proportional to 18,698.48, 28,042.92 and 5,547.76 is: 8,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.48 : 28,042.92 = 5,547.76 : x
  2. Step 2: Convert to fraction form
    18,698.48/28,042.92 = 5,547.76/x
  3. Step 3: Cross multiply
    18,698.48x = 28,042.92 × 5,547.76
  4. Step 4: Simplify right side
    18,698.48x = 155,575,389.86
  5. Step 5: Solve for x
    x = 155,575,389.86/18,698.48
  6. Step 6: Final answer
    x = 8,320.22

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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.