Home / 35,470.47-48,927.60-21,120.78

Finding the Fourth Proportional to 35,470.47, 48,927.60 and 21,120.78

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Solution

The fourth proportional to 35,470.47, 48,927.60 and 21,120.78 is: 29,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,470.47 : 48,927.60 = 21,120.78 : x
  2. Step 2: Convert to fraction form
    35,470.47/48,927.60 = 21,120.78/x
  3. Step 3: Cross multiply
    35,470.47x = 48,927.60 × 21,120.78
  4. Step 4: Simplify right side
    35,470.47x = 1,033,389,075.53
  5. Step 5: Solve for x
    x = 1,033,389,075.53/35,470.47
  6. Step 6: Final answer
    x = 29,133.79

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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.