Home / 13,860.16-19,127.28-7,572.80

Finding the Fourth Proportional to 13,860.16, 19,127.28 and 7,572.80

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Solution

The fourth proportional to 13,860.16, 19,127.28 and 7,572.80 is: 10,450.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.16 : 19,127.28 = 7,572.80 : x
  2. Step 2: Convert to fraction form
    13,860.16/19,127.28 = 7,572.80/x
  3. Step 3: Cross multiply
    13,860.16x = 19,127.28 × 7,572.80
  4. Step 4: Simplify right side
    13,860.16x = 144,847,065.98
  5. Step 5: Solve for x
    x = 144,847,065.98/13,860.16
  6. Step 6: Final answer
    x = 10,450.61

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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.