Home / 15,484.32-21,368.25-8,769.78

Finding the Fourth Proportional to 15,484.32, 21,368.25 and 8,769.78

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Solution

The fourth proportional to 15,484.32, 21,368.25 and 8,769.78 is: 12,102.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,484.32 : 21,368.25 = 8,769.78 : x
  2. Step 2: Convert to fraction form
    15,484.32/21,368.25 = 8,769.78/x
  3. Step 3: Cross multiply
    15,484.32x = 21,368.25 × 8,769.78
  4. Step 4: Simplify right side
    15,484.32x = 187,394,851.49
  5. Step 5: Solve for x
    x = 187,394,851.49/15,484.32
  6. Step 6: Final answer
    x = 12,102.23

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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.