Home / 43,314.38-64,980.19-21,128.18

Finding the Fourth Proportional to 43,314.38, 64,980.19 and 21,128.18

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Solution

The fourth proportional to 43,314.38, 64,980.19 and 21,128.18 is: 31,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,314.38 : 64,980.19 = 21,128.18 : x
  2. Step 2: Convert to fraction form
    43,314.38/64,980.19 = 21,128.18/x
  3. Step 3: Cross multiply
    43,314.38x = 64,980.19 × 21,128.18
  4. Step 4: Simplify right side
    43,314.38x = 1,372,912,852.26
  5. Step 5: Solve for x
    x = 1,372,912,852.26/43,314.38
  6. Step 6: Final answer
    x = 31,696.47

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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.