Home / 21,290.22-31,949.00-14,278.16

Finding the Fourth Proportional to 21,290.22, 31,949.00 and 14,278.16

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Solution

The fourth proportional to 21,290.22, 31,949.00 and 14,278.16 is: 21,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.22 : 31,949.00 = 14,278.16 : x
  2. Step 2: Convert to fraction form
    21,290.22/31,949.00 = 14,278.16/x
  3. Step 3: Cross multiply
    21,290.22x = 31,949.00 × 14,278.16
  4. Step 4: Simplify right side
    21,290.22x = 456,172,809.79
  5. Step 5: Solve for x
    x = 456,172,809.79/21,290.22
  6. Step 6: Final answer
    x = 21,426.40

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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.