Home / 28,012.14-38,656.55-15,436.89

Finding the Fourth Proportional to 28,012.14, 38,656.55 and 15,436.89

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Solution

The fourth proportional to 28,012.14, 38,656.55 and 15,436.89 is: 21,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.14 : 38,656.55 = 15,436.89 : x
  2. Step 2: Convert to fraction form
    28,012.14/38,656.55 = 15,436.89/x
  3. Step 3: Cross multiply
    28,012.14x = 38,656.55 × 15,436.89
  4. Step 4: Simplify right side
    28,012.14x = 596,736,832.95
  5. Step 5: Solve for x
    x = 596,736,832.95/28,012.14
  6. Step 6: Final answer
    x = 21,302.79

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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.