Home / 13,934.16-19,200.24-12,970.80

Finding the Fourth Proportional to 13,934.16, 19,200.24 and 12,970.80

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Solution

The fourth proportional to 13,934.16, 19,200.24 and 12,970.80 is: 17,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.16 : 19,200.24 = 12,970.80 : x
  2. Step 2: Convert to fraction form
    13,934.16/19,200.24 = 12,970.80/x
  3. Step 3: Cross multiply
    13,934.16x = 19,200.24 × 12,970.80
  4. Step 4: Simplify right side
    13,934.16x = 249,042,472.99
  5. Step 5: Solve for x
    x = 249,042,472.99/13,934.16
  6. Step 6: Final answer
    x = 17,872.80

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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.