Home / 35,539.20-49,036.80-21,388.80

Finding the Fourth Proportional to 35,539.20, 49,036.80 and 21,388.80

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Solution

The fourth proportional to 35,539.20, 49,036.80 and 21,388.80 is: 29,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,539.20 : 49,036.80 = 21,388.80 : x
  2. Step 2: Convert to fraction form
    35,539.20/49,036.80 = 21,388.80/x
  3. Step 3: Cross multiply
    35,539.20x = 49,036.80 × 21,388.80
  4. Step 4: Simplify right side
    35,539.20x = 1,048,838,307.84
  5. Step 5: Solve for x
    x = 1,048,838,307.84/35,539.20
  6. Step 6: Final answer
    x = 29,512.15

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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.