Home / 25,321.48-34,966.15-15,777.79

Finding the Fourth Proportional to 25,321.48, 34,966.15 and 15,777.79

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Solution

The fourth proportional to 25,321.48, 34,966.15 and 15,777.79 is: 21,787.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.48 : 34,966.15 = 15,777.79 : x
  2. Step 2: Convert to fraction form
    25,321.48/34,966.15 = 15,777.79/x
  3. Step 3: Cross multiply
    25,321.48x = 34,966.15 × 15,777.79
  4. Step 4: Simplify right side
    25,321.48x = 551,688,444.95
  5. Step 5: Solve for x
    x = 551,688,444.95/25,321.48
  6. Step 6: Final answer
    x = 21,787.37

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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.