Home / 12,025.40-16,587.68-7,769.55

Finding the Fourth Proportional to 12,025.40, 16,587.68 and 7,769.55

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Solution

The fourth proportional to 12,025.40, 16,587.68 and 7,769.55 is: 10,717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,025.40 : 16,587.68 = 7,769.55 : x
  2. Step 2: Convert to fraction form
    12,025.40/16,587.68 = 7,769.55/x
  3. Step 3: Cross multiply
    12,025.40x = 16,587.68 × 7,769.55
  4. Step 4: Simplify right side
    12,025.40x = 128,878,809.14
  5. Step 5: Solve for x
    x = 128,878,809.14/12,025.40
  6. Step 6: Final answer
    x = 10,717.22

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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.