Home / 15,496.02-21,384.78-8,781.48

Finding the Fourth Proportional to 15,496.02, 21,384.78 and 8,781.48

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Solution

The fourth proportional to 15,496.02, 21,384.78 and 8,781.48 is: 12,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.02 : 21,384.78 = 8,781.48 : x
  2. Step 2: Convert to fraction form
    15,496.02/21,384.78 = 8,781.48/x
  3. Step 3: Cross multiply
    15,496.02x = 21,384.78 × 8,781.48
  4. Step 4: Simplify right side
    15,496.02x = 187,790,017.87
  5. Step 5: Solve for x
    x = 187,790,017.87/15,496.02
  6. Step 6: Final answer
    x = 12,118.60

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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.