Home / 27,787.18-38,346.76-15,688.30

Finding the Fourth Proportional to 27,787.18, 38,346.76 and 15,688.30

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Solution

The fourth proportional to 27,787.18, 38,346.76 and 15,688.30 is: 21,650.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.18 : 38,346.76 = 15,688.30 : x
  2. Step 2: Convert to fraction form
    27,787.18/38,346.76 = 15,688.30/x
  3. Step 3: Cross multiply
    27,787.18x = 38,346.76 × 15,688.30
  4. Step 4: Simplify right side
    27,787.18x = 601,595,474.91
  5. Step 5: Solve for x
    x = 601,595,474.91/27,787.18
  6. Step 6: Final answer
    x = 21,650.11

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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.