Home / 28,125.98-38,812.26-15,376.80

Finding the Fourth Proportional to 28,125.98, 38,812.26 and 15,376.80

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Solution

The fourth proportional to 28,125.98, 38,812.26 and 15,376.80 is: 21,219.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.98 : 38,812.26 = 15,376.80 : x
  2. Step 2: Convert to fraction form
    28,125.98/38,812.26 = 15,376.80/x
  3. Step 3: Cross multiply
    28,125.98x = 38,812.26 × 15,376.80
  4. Step 4: Simplify right side
    28,125.98x = 596,808,399.04
  5. Step 5: Solve for x
    x = 596,808,399.04/28,125.98
  6. Step 6: Final answer
    x = 21,219.11

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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.