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Finding the Fourth Proportional to 15,648.90, 23,470.90 and 5,118.84

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Solution

The fourth proportional to 15,648.90, 23,470.90 and 5,118.84 is: 7,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.90 : 23,470.90 = 5,118.84 : x
  2. Step 2: Convert to fraction form
    15,648.90/23,470.90 = 5,118.84/x
  3. Step 3: Cross multiply
    15,648.90x = 23,470.90 × 5,118.84
  4. Step 4: Simplify right side
    15,648.90x = 120,143,638.81
  5. Step 5: Solve for x
    x = 120,143,638.81/15,648.90
  6. Step 6: Final answer
    x = 7,677.45

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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.