Home / 28,116.09-38,800.41-15,369.12

Finding the Fourth Proportional to 28,116.09, 38,800.41 and 15,369.12

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Solution

The fourth proportional to 28,116.09, 38,800.41 and 15,369.12 is: 21,209.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.09 : 38,800.41 = 15,369.12 : x
  2. Step 2: Convert to fraction form
    28,116.09/38,800.41 = 15,369.12/x
  3. Step 3: Cross multiply
    28,116.09x = 38,800.41 × 15,369.12
  4. Step 4: Simplify right side
    28,116.09x = 596,328,157.34
  5. Step 5: Solve for x
    x = 596,328,157.34/28,116.09
  6. Step 6: Final answer
    x = 21,209.50

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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.