Home / 21,088.08-29,101.32-12,140.82

Finding the Fourth Proportional to 21,088.08, 29,101.32 and 12,140.82

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Solution

The fourth proportional to 21,088.08, 29,101.32 and 12,140.82 is: 16,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.08 : 29,101.32 = 12,140.82 : x
  2. Step 2: Convert to fraction form
    21,088.08/29,101.32 = 12,140.82/x
  3. Step 3: Cross multiply
    21,088.08x = 29,101.32 × 12,140.82
  4. Step 4: Simplify right side
    21,088.08x = 353,313,887.88
  5. Step 5: Solve for x
    x = 353,313,887.88/21,088.08
  6. Step 6: Final answer
    x = 16,754.20

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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.