Home / 28,562.64-39,415.20-15,816.96

Finding the Fourth Proportional to 28,562.64, 39,415.20 and 15,816.96

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Solution

The fourth proportional to 28,562.64, 39,415.20 and 15,816.96 is: 21,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.64 : 39,415.20 = 15,816.96 : x
  2. Step 2: Convert to fraction form
    28,562.64/39,415.20 = 15,816.96/x
  3. Step 3: Cross multiply
    28,562.64x = 39,415.20 × 15,816.96
  4. Step 4: Simplify right side
    28,562.64x = 623,428,641.79
  5. Step 5: Solve for x
    x = 623,428,641.79/28,562.64
  6. Step 6: Final answer
    x = 21,826.72

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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.