Home / 15,430.54-21,294.14-8,356.96

Finding the Fourth Proportional to 15,430.54, 21,294.14 and 8,356.96

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Solution

The fourth proportional to 15,430.54, 21,294.14 and 8,356.96 is: 11,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.54 : 21,294.14 = 8,356.96 : x
  2. Step 2: Convert to fraction form
    15,430.54/21,294.14 = 8,356.96/x
  3. Step 3: Cross multiply
    15,430.54x = 21,294.14 × 8,356.96
  4. Step 4: Simplify right side
    15,430.54x = 177,954,276.21
  5. Step 5: Solve for x
    x = 177,954,276.21/15,430.54
  6. Step 6: Final answer
    x = 11,532.60

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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.