Home / 28,484.76-39,309.50-15,738.65

Finding the Fourth Proportional to 28,484.76, 39,309.50 and 15,738.65

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Solution

The fourth proportional to 28,484.76, 39,309.50 and 15,738.65 is: 21,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.76 : 39,309.50 = 15,738.65 : x
  2. Step 2: Convert to fraction form
    28,484.76/39,309.50 = 15,738.65/x
  3. Step 3: Cross multiply
    28,484.76x = 39,309.50 × 15,738.65
  4. Step 4: Simplify right side
    28,484.76x = 618,678,673.50
  5. Step 5: Solve for x
    x = 618,678,673.50/28,484.76
  6. Step 6: Final answer
    x = 21,719.64

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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.