Home / 15,470.45-21,349.10-8,396.72

Finding the Fourth Proportional to 15,470.45, 21,349.10 and 8,396.72

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Solution

The fourth proportional to 15,470.45, 21,349.10 and 8,396.72 is: 11,587.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.45 : 21,349.10 = 8,396.72 : x
  2. Step 2: Convert to fraction form
    15,470.45/21,349.10 = 8,396.72/x
  3. Step 3: Cross multiply
    15,470.45x = 21,349.10 × 8,396.72
  4. Step 4: Simplify right side
    15,470.45x = 179,262,266.22
  5. Step 5: Solve for x
    x = 179,262,266.22/15,470.45
  6. Step 6: Final answer
    x = 11,587.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.