Home / 12,219.81-16,862.49-7,184.25

Finding the Fourth Proportional to 12,219.81, 16,862.49 and 7,184.25

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Solution

The fourth proportional to 12,219.81, 16,862.49 and 7,184.25 is: 9,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.81 : 16,862.49 = 7,184.25 : x
  2. Step 2: Convert to fraction form
    12,219.81/16,862.49 = 7,184.25/x
  3. Step 3: Cross multiply
    12,219.81x = 16,862.49 × 7,184.25
  4. Step 4: Simplify right side
    12,219.81x = 121,144,343.78
  5. Step 5: Solve for x
    x = 121,144,343.78/12,219.81
  6. Step 6: Final answer
    x = 9,913.77

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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.