Home / 21,431.16-29,574.12-11,999.52

Finding the Fourth Proportional to 21,431.16, 29,574.12 and 11,999.52

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Solution

The fourth proportional to 21,431.16, 29,574.12 and 11,999.52 is: 16,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.16 : 29,574.12 = 11,999.52 : x
  2. Step 2: Convert to fraction form
    21,431.16/29,574.12 = 11,999.52/x
  3. Step 3: Cross multiply
    21,431.16x = 29,574.12 × 11,999.52
  4. Step 4: Simplify right side
    21,431.16x = 354,875,244.42
  5. Step 5: Solve for x
    x = 354,875,244.42/21,431.16
  6. Step 6: Final answer
    x = 16,558.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.