Home / 13,859.48-19,127.40-7,572.80

Finding the Fourth Proportional to 13,859.48, 19,127.40 and 7,572.80

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Solution

The fourth proportional to 13,859.48, 19,127.40 and 7,572.80 is: 10,451.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.48 : 19,127.40 = 7,572.80 : x
  2. Step 2: Convert to fraction form
    13,859.48/19,127.40 = 7,572.80/x
  3. Step 3: Cross multiply
    13,859.48x = 19,127.40 × 7,572.80
  4. Step 4: Simplify right side
    13,859.48x = 144,847,974.72
  5. Step 5: Solve for x
    x = 144,847,974.72/13,859.48
  6. Step 6: Final answer
    x = 10,451.18

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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.