Home / 21,424.10-29,566.96-15,784.61

Finding the Fourth Proportional to 21,424.10, 29,566.96 and 15,784.61

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Solution

The fourth proportional to 21,424.10, 29,566.96 and 15,784.61 is: 21,784.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.10 : 29,566.96 = 15,784.61 : x
  2. Step 2: Convert to fraction form
    21,424.10/29,566.96 = 15,784.61/x
  3. Step 3: Cross multiply
    21,424.10x = 29,566.96 × 15,784.61
  4. Step 4: Simplify right side
    21,424.10x = 466,702,745.19
  5. Step 5: Solve for x
    x = 466,702,745.19/21,424.10
  6. Step 6: Final answer
    x = 21,784.01

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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.