Home / 21,418.58-32,117.34-12,651.14

Finding the Fourth Proportional to 21,418.58, 32,117.34 and 12,651.14

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Solution

The fourth proportional to 21,418.58, 32,117.34 and 12,651.14 is: 18,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.58 : 32,117.34 = 12,651.14 : x
  2. Step 2: Convert to fraction form
    21,418.58/32,117.34 = 12,651.14/x
  3. Step 3: Cross multiply
    21,418.58x = 32,117.34 × 12,651.14
  4. Step 4: Simplify right side
    21,418.58x = 406,320,964.77
  5. Step 5: Solve for x
    x = 406,320,964.77/21,418.58
  6. Step 6: Final answer
    x = 18,970.49

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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.