Home / 21,015.57-29,003.54-15,701.16

Finding the Fourth Proportional to 21,015.57, 29,003.54 and 15,701.16

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Solution

The fourth proportional to 21,015.57, 29,003.54 and 15,701.16 is: 21,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.57 : 29,003.54 = 15,701.16 : x
  2. Step 2: Convert to fraction form
    21,015.57/29,003.54 = 15,701.16/x
  3. Step 3: Cross multiply
    21,015.57x = 29,003.54 × 15,701.16
  4. Step 4: Simplify right side
    21,015.57x = 455,389,252.36
  5. Step 5: Solve for x
    x = 455,389,252.36/21,015.57
  6. Step 6: Final answer
    x = 21,669.13

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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.