Home / 13,189.95-19,787.49-4,307.76

Finding the Fourth Proportional to 13,189.95, 19,787.49 and 4,307.76

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Solution

The fourth proportional to 13,189.95, 19,787.49 and 4,307.76 is: 6,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.95 : 19,787.49 = 4,307.76 : x
  2. Step 2: Convert to fraction form
    13,189.95/19,787.49 = 4,307.76/x
  3. Step 3: Cross multiply
    13,189.95x = 19,787.49 × 4,307.76
  4. Step 4: Simplify right side
    13,189.95x = 85,239,757.92
  5. Step 5: Solve for x
    x = 85,239,757.92/13,189.95
  6. Step 6: Final answer
    x = 6,462.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.