Home / 21,042.68-31,521.34-9,782.24

Finding the Fourth Proportional to 21,042.68, 31,521.34 and 9,782.24

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Solution

The fourth proportional to 21,042.68, 31,521.34 and 9,782.24 is: 14,653.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.68 : 31,521.34 = 9,782.24 : x
  2. Step 2: Convert to fraction form
    21,042.68/31,521.34 = 9,782.24/x
  3. Step 3: Cross multiply
    21,042.68x = 31,521.34 × 9,782.24
  4. Step 4: Simplify right side
    21,042.68x = 308,349,313.00
  5. Step 5: Solve for x
    x = 308,349,313.00/21,042.68
  6. Step 6: Final answer
    x = 14,653.52

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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.