Home / 22,800.60-31,486.56-21,558.12

Finding the Fourth Proportional to 22,800.60, 31,486.56 and 21,558.12

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Solution

The fourth proportional to 22,800.60, 31,486.56 and 21,558.12 is: 29,770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,800.60 : 31,486.56 = 21,558.12 : x
  2. Step 2: Convert to fraction form
    22,800.60/31,486.56 = 21,558.12/x
  3. Step 3: Cross multiply
    22,800.60x = 31,486.56 × 21,558.12
  4. Step 4: Simplify right side
    22,800.60x = 678,791,038.87
  5. Step 5: Solve for x
    x = 678,791,038.87/22,800.60
  6. Step 6: Final answer
    x = 29,770.75

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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.