Home / 20,866.54-28,823.43-15,552.13

Finding the Fourth Proportional to 20,866.54, 28,823.43 and 15,552.13

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Solution

The fourth proportional to 20,866.54, 28,823.43 and 15,552.13 is: 21,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.54 : 28,823.43 = 15,552.13 : x
  2. Step 2: Convert to fraction form
    20,866.54/28,823.43 = 15,552.13/x
  3. Step 3: Cross multiply
    20,866.54x = 28,823.43 × 15,552.13
  4. Step 4: Simplify right side
    20,866.54x = 448,265,730.41
  5. Step 5: Solve for x
    x = 448,265,730.41/20,866.54
  6. Step 6: Final answer
    x = 21,482.51

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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.