Home / 21,905.70-32,858.55-10,220.10

Finding the Fourth Proportional to 21,905.70, 32,858.55 and 10,220.10

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Solution

The fourth proportional to 21,905.70, 32,858.55 and 10,220.10 is: 15,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.70 : 32,858.55 = 10,220.10 : x
  2. Step 2: Convert to fraction form
    21,905.70/32,858.55 = 10,220.10/x
  3. Step 3: Cross multiply
    21,905.70x = 32,858.55 × 10,220.10
  4. Step 4: Simplify right side
    21,905.70x = 335,817,666.86
  5. Step 5: Solve for x
    x = 335,817,666.86/21,905.70
  6. Step 6: Final answer
    x = 15,330.15

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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.