Home / 21,066.63-31,609.16-9,981.24

Finding the Fourth Proportional to 21,066.63, 31,609.16 and 9,981.24

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Solution

The fourth proportional to 21,066.63, 31,609.16 and 9,981.24 is: 14,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.63 : 31,609.16 = 9,981.24 : x
  2. Step 2: Convert to fraction form
    21,066.63/31,609.16 = 9,981.24/x
  3. Step 3: Cross multiply
    21,066.63x = 31,609.16 × 9,981.24
  4. Step 4: Simplify right side
    21,066.63x = 315,498,612.16
  5. Step 5: Solve for x
    x = 315,498,612.16/21,066.63
  6. Step 6: Final answer
    x = 14,976.23

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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.