Home / 12,776.23-19,156.15-5,378.70

Finding the Fourth Proportional to 12,776.23, 19,156.15 and 5,378.70

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Solution

The fourth proportional to 12,776.23, 19,156.15 and 5,378.70 is: 8,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.23 : 19,156.15 = 5,378.70 : x
  2. Step 2: Convert to fraction form
    12,776.23/19,156.15 = 5,378.70/x
  3. Step 3: Cross multiply
    12,776.23x = 19,156.15 × 5,378.70
  4. Step 4: Simplify right side
    12,776.23x = 103,035,232.31
  5. Step 5: Solve for x
    x = 103,035,232.31/12,776.23
  6. Step 6: Final answer
    x = 8,064.60

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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.