Home / 19,144.16-28,686.92-12,880.98

Finding the Fourth Proportional to 19,144.16, 28,686.92 and 12,880.98

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Solution

The fourth proportional to 19,144.16, 28,686.92 and 12,880.98 is: 19,301.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.16 : 28,686.92 = 12,880.98 : x
  2. Step 2: Convert to fraction form
    19,144.16/28,686.92 = 12,880.98/x
  3. Step 3: Cross multiply
    19,144.16x = 28,686.92 × 12,880.98
  4. Step 4: Simplify right side
    19,144.16x = 369,515,642.78
  5. Step 5: Solve for x
    x = 369,515,642.78/19,144.16
  6. Step 6: Final answer
    x = 19,301.74

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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.