Home / 13,118.22-19,686.21-5,718.40

Finding the Fourth Proportional to 13,118.22, 19,686.21 and 5,718.40

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Solution

The fourth proportional to 13,118.22, 19,686.21 and 5,718.40 is: 8,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.22 : 19,686.21 = 5,718.40 : x
  2. Step 2: Convert to fraction form
    13,118.22/19,686.21 = 5,718.40/x
  3. Step 3: Cross multiply
    13,118.22x = 19,686.21 × 5,718.40
  4. Step 4: Simplify right side
    13,118.22x = 112,573,552.60
  5. Step 5: Solve for x
    x = 112,573,552.60/13,118.22
  6. Step 6: Final answer
    x = 8,581.47

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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.