Home / 21,631.08-29,827.85-17,085.77

Finding the Fourth Proportional to 21,631.08, 29,827.85 and 17,085.77

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Solution

The fourth proportional to 21,631.08, 29,827.85 and 17,085.77 is: 23,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.08 : 29,827.85 = 17,085.77 : x
  2. Step 2: Convert to fraction form
    21,631.08/29,827.85 = 17,085.77/x
  3. Step 3: Cross multiply
    21,631.08x = 29,827.85 × 17,085.77
  4. Step 4: Simplify right side
    21,631.08x = 509,631,661.98
  5. Step 5: Solve for x
    x = 509,631,661.98/21,631.08
  6. Step 6: Final answer
    x = 23,560.15

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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.