Home / 28,637.70-42,956.55-15,515.70

Finding the Fourth Proportional to 28,637.70, 42,956.55 and 15,515.70

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Solution

The fourth proportional to 28,637.70, 42,956.55 and 15,515.70 is: 23,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.70 : 42,956.55 = 15,515.70 : x
  2. Step 2: Convert to fraction form
    28,637.70/42,956.55 = 15,515.70/x
  3. Step 3: Cross multiply
    28,637.70x = 42,956.55 × 15,515.70
  4. Step 4: Simplify right side
    28,637.70x = 666,500,942.84
  5. Step 5: Solve for x
    x = 666,500,942.84/28,637.70
  6. Step 6: Final answer
    x = 23,273.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.