Home / 28,574.42-39,432.78-15,828.12

Finding the Fourth Proportional to 28,574.42, 39,432.78 and 15,828.12

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Solution

The fourth proportional to 28,574.42, 39,432.78 and 15,828.12 is: 21,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.42 : 39,432.78 = 15,828.12 : x
  2. Step 2: Convert to fraction form
    28,574.42/39,432.78 = 15,828.12/x
  3. Step 3: Cross multiply
    28,574.42x = 39,432.78 × 15,828.12
  4. Step 4: Simplify right side
    28,574.42x = 624,146,773.77
  5. Step 5: Solve for x
    x = 624,146,773.77/28,574.42
  6. Step 6: Final answer
    x = 21,842.85

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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.