Home / 28,299.60-39,050.64-15,723.12

Finding the Fourth Proportional to 28,299.60, 39,050.64 and 15,723.12

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Solution

The fourth proportional to 28,299.60, 39,050.64 and 15,723.12 is: 21,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.60 : 39,050.64 = 15,723.12 : x
  2. Step 2: Convert to fraction form
    28,299.60/39,050.64 = 15,723.12/x
  3. Step 3: Cross multiply
    28,299.60x = 39,050.64 × 15,723.12
  4. Step 4: Simplify right side
    28,299.60x = 613,997,898.80
  5. Step 5: Solve for x
    x = 613,997,898.80/28,299.60
  6. Step 6: Final answer
    x = 21,696.35

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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.