Home / 15,445.25-21,314.78-8,730.48

Finding the Fourth Proportional to 15,445.25, 21,314.78 and 8,730.48

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Solution

The fourth proportional to 15,445.25, 21,314.78 and 8,730.48 is: 12,048.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.25 : 21,314.78 = 8,730.48 : x
  2. Step 2: Convert to fraction form
    15,445.25/21,314.78 = 8,730.48/x
  3. Step 3: Cross multiply
    15,445.25x = 21,314.78 × 8,730.48
  4. Step 4: Simplify right side
    15,445.25x = 186,088,110.27
  5. Step 5: Solve for x
    x = 186,088,110.27/15,445.25
  6. Step 6: Final answer
    x = 12,048.24

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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.