Home / 21,238.32-31,837.57-7,188.52

Finding the Fourth Proportional to 21,238.32, 31,837.57 and 7,188.52

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Solution

The fourth proportional to 21,238.32, 31,837.57 and 7,188.52 is: 10,776.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.32 : 31,837.57 = 7,188.52 : x
  2. Step 2: Convert to fraction form
    21,238.32/31,837.57 = 7,188.52/x
  3. Step 3: Cross multiply
    21,238.32x = 31,837.57 × 7,188.52
  4. Step 4: Simplify right side
    21,238.32x = 228,864,849.51
  5. Step 5: Solve for x
    x = 228,864,849.51/21,238.32
  6. Step 6: Final answer
    x = 10,776.03

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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.