Home / 28,824.66-39,775.14-21,275.10

Finding the Fourth Proportional to 28,824.66, 39,775.14 and 21,275.10

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Solution

The fourth proportional to 28,824.66, 39,775.14 and 21,275.10 is: 29,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,824.66 : 39,775.14 = 21,275.10 : x
  2. Step 2: Convert to fraction form
    28,824.66/39,775.14 = 21,275.10/x
  3. Step 3: Cross multiply
    28,824.66x = 39,775.14 × 21,275.10
  4. Step 4: Simplify right side
    28,824.66x = 846,220,081.01
  5. Step 5: Solve for x
    x = 846,220,081.01/28,824.66
  6. Step 6: Final answer
    x = 29,357.50

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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.