Home / 28,925.52-39,888.48-21,772.56

Finding the Fourth Proportional to 28,925.52, 39,888.48 and 21,772.56

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Solution

The fourth proportional to 28,925.52, 39,888.48 and 21,772.56 is: 30,024.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.52 : 39,888.48 = 21,772.56 : x
  2. Step 2: Convert to fraction form
    28,925.52/39,888.48 = 21,772.56/x
  3. Step 3: Cross multiply
    28,925.52x = 39,888.48 × 21,772.56
  4. Step 4: Simplify right side
    28,925.52x = 868,474,324.11
  5. Step 5: Solve for x
    x = 868,474,324.11/28,925.52
  6. Step 6: Final answer
    x = 30,024.50

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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.