Home / 29,319.04-40,460.80-15,890.56

Finding the Fourth Proportional to 29,319.04, 40,460.80 and 15,890.56

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Solution

The fourth proportional to 29,319.04, 40,460.80 and 15,890.56 is: 21,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,319.04 : 40,460.80 = 15,890.56 : x
  2. Step 2: Convert to fraction form
    29,319.04/40,460.80 = 15,890.56/x
  3. Step 3: Cross multiply
    29,319.04x = 40,460.80 × 15,890.56
  4. Step 4: Simplify right side
    29,319.04x = 642,944,770.05
  5. Step 5: Solve for x
    x = 642,944,770.05/29,319.04
  6. Step 6: Final answer
    x = 21,929.26

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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.