Home / 14,378.80-19,792.20-12,862.48

Finding the Fourth Proportional to 14,378.80, 19,792.20 and 12,862.48

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Solution

The fourth proportional to 14,378.80, 19,792.20 and 12,862.48 is: 17,705.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.80 : 19,792.20 = 12,862.48 : x
  2. Step 2: Convert to fraction form
    14,378.80/19,792.20 = 12,862.48/x
  3. Step 3: Cross multiply
    14,378.80x = 19,792.20 × 12,862.48
  4. Step 4: Simplify right side
    14,378.80x = 254,576,776.66
  5. Step 5: Solve for x
    x = 254,576,776.66/14,378.80
  6. Step 6: Final answer
    x = 17,705.01

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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.