Home / 40,921.70-61,382.55-21,206.30

Finding the Fourth Proportional to 40,921.70, 61,382.55 and 21,206.30

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Solution

The fourth proportional to 40,921.70, 61,382.55 and 21,206.30 is: 31,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,921.70 : 61,382.55 = 21,206.30 : x
  2. Step 2: Convert to fraction form
    40,921.70/61,382.55 = 21,206.30/x
  3. Step 3: Cross multiply
    40,921.70x = 61,382.55 × 21,206.30
  4. Step 4: Simplify right side
    40,921.70x = 1,301,696,770.07
  5. Step 5: Solve for x
    x = 1,301,696,770.07/40,921.70
  6. Step 6: Final answer
    x = 31,809.45

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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.