Home / 12,782.61-19,156.91-5,378.13

Finding the Fourth Proportional to 12,782.61, 19,156.91 and 5,378.13

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Solution

The fourth proportional to 12,782.61, 19,156.91 and 5,378.13 is: 8,060.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.61 : 19,156.91 = 5,378.13 : x
  2. Step 2: Convert to fraction form
    12,782.61/19,156.91 = 5,378.13/x
  3. Step 3: Cross multiply
    12,782.61x = 19,156.91 × 5,378.13
  4. Step 4: Simplify right side
    12,782.61x = 103,028,325.49
  5. Step 5: Solve for x
    x = 103,028,325.49/12,782.61
  6. Step 6: Final answer
    x = 8,060.04

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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.