Home / 21,181.34-31,782.45-14,981.19

Finding the Fourth Proportional to 21,181.34, 31,782.45 and 14,981.19

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Solution

The fourth proportional to 21,181.34, 31,782.45 and 14,981.19 is: 22,479.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.34 : 31,782.45 = 14,981.19 : x
  2. Step 2: Convert to fraction form
    21,181.34/31,782.45 = 14,981.19/x
  3. Step 3: Cross multiply
    21,181.34x = 31,782.45 × 14,981.19
  4. Step 4: Simplify right side
    21,181.34x = 476,138,922.12
  5. Step 5: Solve for x
    x = 476,138,922.12/21,181.34
  6. Step 6: Final answer
    x = 22,479.17

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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.