Home / 10,640.29-14,685.35-8,117.64

Finding the Fourth Proportional to 10,640.29, 14,685.35 and 8,117.64

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Solution

The fourth proportional to 10,640.29, 14,685.35 and 8,117.64 is: 11,203.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.29 : 14,685.35 = 8,117.64 : x
  2. Step 2: Convert to fraction form
    10,640.29/14,685.35 = 8,117.64/x
  3. Step 3: Cross multiply
    10,640.29x = 14,685.35 × 8,117.64
  4. Step 4: Simplify right side
    10,640.29x = 119,210,384.57
  5. Step 5: Solve for x
    x = 119,210,384.57/10,640.29
  6. Step 6: Final answer
    x = 11,203.68

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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.