Home / 15,735.28-21,652.92-15,638.08

Finding the Fourth Proportional to 15,735.28, 21,652.92 and 15,638.08

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Solution

The fourth proportional to 15,735.28, 21,652.92 and 15,638.08 is: 21,519.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,735.28 : 21,652.92 = 15,638.08 : x
  2. Step 2: Convert to fraction form
    15,735.28/21,652.92 = 15,638.08/x
  3. Step 3: Cross multiply
    15,735.28x = 21,652.92 × 15,638.08
  4. Step 4: Simplify right side
    15,735.28x = 338,610,095.19
  5. Step 5: Solve for x
    x = 338,610,095.19/15,735.28
  6. Step 6: Final answer
    x = 21,519.17

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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.