Home / 21,236.16-31,859.28-6,445.92

Finding the Fourth Proportional to 21,236.16, 31,859.28 and 6,445.92

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Solution

The fourth proportional to 21,236.16, 31,859.28 and 6,445.92 is: 9,670.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.16 : 31,859.28 = 6,445.92 : x
  2. Step 2: Convert to fraction form
    21,236.16/31,859.28 = 6,445.92/x
  3. Step 3: Cross multiply
    21,236.16x = 31,859.28 × 6,445.92
  4. Step 4: Simplify right side
    21,236.16x = 205,362,370.14
  5. Step 5: Solve for x
    x = 205,362,370.14/21,236.16
  6. Step 6: Final answer
    x = 9,670.41

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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.