Home / 28,315.54-39,074.61-15,568.71

Finding the Fourth Proportional to 28,315.54, 39,074.61 and 15,568.71

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Solution

The fourth proportional to 28,315.54, 39,074.61 and 15,568.71 is: 21,484.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.54 : 39,074.61 = 15,568.71 : x
  2. Step 2: Convert to fraction form
    28,315.54/39,074.61 = 15,568.71/x
  3. Step 3: Cross multiply
    28,315.54x = 39,074.61 × 15,568.71
  4. Step 4: Simplify right side
    28,315.54x = 608,341,139.52
  5. Step 5: Solve for x
    x = 608,341,139.52/28,315.54
  6. Step 6: Final answer
    x = 21,484.36

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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.