Home / 12,549.40-18,812.10-4,649.80

Finding the Fourth Proportional to 12,549.40, 18,812.10 and 4,649.80

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Solution

The fourth proportional to 12,549.40, 18,812.10 and 4,649.80 is: 6,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.40 : 18,812.10 = 4,649.80 : x
  2. Step 2: Convert to fraction form
    12,549.40/18,812.10 = 4,649.80/x
  3. Step 3: Cross multiply
    12,549.40x = 18,812.10 × 4,649.80
  4. Step 4: Simplify right side
    12,549.40x = 87,472,502.58
  5. Step 5: Solve for x
    x = 87,472,502.58/12,549.40
  6. Step 6: Final answer
    x = 6,970.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.