Home / 21,836.04-30,132.84-12,403.56

Finding the Fourth Proportional to 21,836.04, 30,132.84 and 12,403.56

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Solution

The fourth proportional to 21,836.04, 30,132.84 and 12,403.56 is: 17,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.04 : 30,132.84 = 12,403.56 : x
  2. Step 2: Convert to fraction form
    21,836.04/30,132.84 = 12,403.56/x
  3. Step 3: Cross multiply
    21,836.04x = 30,132.84 × 12,403.56
  4. Step 4: Simplify right side
    21,836.04x = 373,754,488.91
  5. Step 5: Solve for x
    x = 373,754,488.91/21,836.04
  6. Step 6: Final answer
    x = 17,116.40

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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.