Home / 22,511.66-31,064.72-13,078.40

Finding the Fourth Proportional to 22,511.66, 31,064.72 and 13,078.40

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Solution

The fourth proportional to 22,511.66, 31,064.72 and 13,078.40 is: 18,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,511.66 : 31,064.72 = 13,078.40 : x
  2. Step 2: Convert to fraction form
    22,511.66/31,064.72 = 13,078.40/x
  3. Step 3: Cross multiply
    22,511.66x = 31,064.72 × 13,078.40
  4. Step 4: Simplify right side
    22,511.66x = 406,276,834.05
  5. Step 5: Solve for x
    x = 406,276,834.05/22,511.66
  6. Step 6: Final answer
    x = 18,047.40

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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.