Home / 33,985.60-46,912.80-21,419.20

Finding the Fourth Proportional to 33,985.60, 46,912.80 and 21,419.20

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Solution

The fourth proportional to 33,985.60, 46,912.80 and 21,419.20 is: 29,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,985.60 : 46,912.80 = 21,419.20 : x
  2. Step 2: Convert to fraction form
    33,985.60/46,912.80 = 21,419.20/x
  3. Step 3: Cross multiply
    33,985.60x = 46,912.80 × 21,419.20
  4. Step 4: Simplify right side
    33,985.60x = 1,004,834,645.76
  5. Step 5: Solve for x
    x = 1,004,834,645.76/33,985.60
  6. Step 6: Final answer
    x = 29,566.48

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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.