Home / 21,140.64-29,166.48-12,754.08

Finding the Fourth Proportional to 21,140.64, 29,166.48 and 12,754.08

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Solution

The fourth proportional to 21,140.64, 29,166.48 and 12,754.08 is: 17,596.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.64 : 29,166.48 = 12,754.08 : x
  2. Step 2: Convert to fraction form
    21,140.64/29,166.48 = 12,754.08/x
  3. Step 3: Cross multiply
    21,140.64x = 29,166.48 × 12,754.08
  4. Step 4: Simplify right side
    21,140.64x = 371,991,619.24
  5. Step 5: Solve for x
    x = 371,991,619.24/21,140.64
  6. Step 6: Final answer
    x = 17,596.04

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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.