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Finding the Fourth Proportional to 10,466.78, 15,698.55 and 9,888.44

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Solution

The fourth proportional to 10,466.78, 15,698.55 and 9,888.44 is: 14,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,466.78 : 15,698.55 = 9,888.44 : x
  2. Step 2: Convert to fraction form
    10,466.78/15,698.55 = 9,888.44/x
  3. Step 3: Cross multiply
    10,466.78x = 15,698.55 × 9,888.44
  4. Step 4: Simplify right side
    10,466.78x = 155,234,169.76
  5. Step 5: Solve for x
    x = 155,234,169.76/10,466.78
  6. Step 6: Final answer
    x = 14,831.13

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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.