Home / 15,529.27-21,430.98-8,815.18

Finding the Fourth Proportional to 15,529.27, 21,430.98 and 8,815.18

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Solution

The fourth proportional to 15,529.27, 21,430.98 and 8,815.18 is: 12,165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.27 : 21,430.98 = 8,815.18 : x
  2. Step 2: Convert to fraction form
    15,529.27/21,430.98 = 8,815.18/x
  3. Step 3: Cross multiply
    15,529.27x = 21,430.98 × 8,815.18
  4. Step 4: Simplify right side
    15,529.27x = 188,917,946.28
  5. Step 5: Solve for x
    x = 188,917,946.28/15,529.27
  6. Step 6: Final answer
    x = 12,165.28

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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.