Home / 21,184.08-29,235.26-12,803.28

Finding the Fourth Proportional to 21,184.08, 29,235.26 and 12,803.28

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Solution

The fourth proportional to 21,184.08, 29,235.26 and 12,803.28 is: 17,669.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.08 : 29,235.26 = 12,803.28 : x
  2. Step 2: Convert to fraction form
    21,184.08/29,235.26 = 12,803.28/x
  3. Step 3: Cross multiply
    21,184.08x = 29,235.26 × 12,803.28
  4. Step 4: Simplify right side
    21,184.08x = 374,307,155.64
  5. Step 5: Solve for x
    x = 374,307,155.64/21,184.08
  6. Step 6: Final answer
    x = 17,669.27

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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.