Home / 22,281.12-30,746.77-12,720.63

Finding the Fourth Proportional to 22,281.12, 30,746.77 and 12,720.63

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Solution

The fourth proportional to 22,281.12, 30,746.77 and 12,720.63 is: 17,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.12 : 30,746.77 = 12,720.63 : x
  2. Step 2: Convert to fraction form
    22,281.12/30,746.77 = 12,720.63/x
  3. Step 3: Cross multiply
    22,281.12x = 30,746.77 × 12,720.63
  4. Step 4: Simplify right side
    22,281.12x = 391,118,284.87
  5. Step 5: Solve for x
    x = 391,118,284.87/22,281.12
  6. Step 6: Final answer
    x = 17,553.80

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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.