Home / 28,118.14-38,802.51-15,542.62

Finding the Fourth Proportional to 28,118.14, 38,802.51 and 15,542.62

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Solution

The fourth proportional to 28,118.14, 38,802.51 and 15,542.62 is: 21,448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.14 : 38,802.51 = 15,542.62 : x
  2. Step 2: Convert to fraction form
    28,118.14/38,802.51 = 15,542.62/x
  3. Step 3: Cross multiply
    28,118.14x = 38,802.51 × 15,542.62
  4. Step 4: Simplify right side
    28,118.14x = 603,092,667.98
  5. Step 5: Solve for x
    x = 603,092,667.98/28,118.14
  6. Step 6: Final answer
    x = 21,448.53

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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.