Home / 28,820.00-39,769.85-15,898.82

Finding the Fourth Proportional to 28,820.00, 39,769.85 and 15,898.82

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Solution

The fourth proportional to 28,820.00, 39,769.85 and 15,898.82 is: 21,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.00 : 39,769.85 = 15,898.82 : x
  2. Step 2: Convert to fraction form
    28,820.00/39,769.85 = 15,898.82/x
  3. Step 3: Cross multiply
    28,820.00x = 39,769.85 × 15,898.82
  4. Step 4: Simplify right side
    28,820.00x = 632,293,527.47
  5. Step 5: Solve for x
    x = 632,293,527.47/28,820.00
  6. Step 6: Final answer
    x = 21,939.40

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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.