Home / 12,551.02-17,320.55-6,885.78

Finding the Fourth Proportional to 12,551.02, 17,320.55 and 6,885.78

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Solution

The fourth proportional to 12,551.02, 17,320.55 and 6,885.78 is: 9,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.02 : 17,320.55 = 6,885.78 : x
  2. Step 2: Convert to fraction form
    12,551.02/17,320.55 = 6,885.78/x
  3. Step 3: Cross multiply
    12,551.02x = 17,320.55 × 6,885.78
  4. Step 4: Simplify right side
    12,551.02x = 119,265,496.78
  5. Step 5: Solve for x
    x = 119,265,496.78/12,551.02
  6. Step 6: Final answer
    x = 9,502.45

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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.