Home / 28,051.20-38,711.04-15,475.68

Finding the Fourth Proportional to 28,051.20, 38,711.04 and 15,475.68

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Solution

The fourth proportional to 28,051.20, 38,711.04 and 15,475.68 is: 21,356.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.20 : 38,711.04 = 15,475.68 : x
  2. Step 2: Convert to fraction form
    28,051.20/38,711.04 = 15,475.68/x
  3. Step 3: Cross multiply
    28,051.20x = 38,711.04 × 15,475.68
  4. Step 4: Simplify right side
    28,051.20x = 599,079,667.51
  5. Step 5: Solve for x
    x = 599,079,667.51/28,051.20
  6. Step 6: Final answer
    x = 21,356.65

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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.