Home / 15,981.57-22,056.71-8,908.65

Finding the Fourth Proportional to 15,981.57, 22,056.71 and 8,908.65

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Solution

The fourth proportional to 15,981.57, 22,056.71 and 8,908.65 is: 12,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.57 : 22,056.71 = 8,908.65 : x
  2. Step 2: Convert to fraction form
    15,981.57/22,056.71 = 8,908.65/x
  3. Step 3: Cross multiply
    15,981.57x = 22,056.71 × 8,908.65
  4. Step 4: Simplify right side
    15,981.57x = 196,495,465.00
  5. Step 5: Solve for x
    x = 196,495,465.00/15,981.57
  6. Step 6: Final answer
    x = 12,295.13

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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.