Home / 28,423.08-39,224.88-15,847.56

Finding the Fourth Proportional to 28,423.08, 39,224.88 and 15,847.56

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Solution

The fourth proportional to 28,423.08, 39,224.88 and 15,847.56 is: 21,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.08 : 39,224.88 = 15,847.56 : x
  2. Step 2: Convert to fraction form
    28,423.08/39,224.88 = 15,847.56/x
  3. Step 3: Cross multiply
    28,423.08x = 39,224.88 × 15,847.56
  4. Step 4: Simplify right side
    28,423.08x = 621,618,639.29
  5. Step 5: Solve for x
    x = 621,618,639.29/28,423.08
  6. Step 6: Final answer
    x = 21,870.21

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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.