Home / 30,824.70-42,526.71-20,220.18

Finding the Fourth Proportional to 30,824.70, 42,526.71 and 20,220.18

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Solution

The fourth proportional to 30,824.70, 42,526.71 and 20,220.18 is: 27,896.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,824.70 : 42,526.71 = 20,220.18 : x
  2. Step 2: Convert to fraction form
    30,824.70/42,526.71 = 20,220.18/x
  3. Step 3: Cross multiply
    30,824.70x = 42,526.71 × 20,220.18
  4. Step 4: Simplify right side
    30,824.70x = 859,897,731.01
  5. Step 5: Solve for x
    x = 859,897,731.01/30,824.70
  6. Step 6: Final answer
    x = 27,896.39

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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.