Home / 28,215.22-38,935.38-15,465.91

Finding the Fourth Proportional to 28,215.22, 38,935.38 and 15,465.91

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Solution

The fourth proportional to 28,215.22, 38,935.38 and 15,465.91 is: 21,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.22 : 38,935.38 = 15,465.91 : x
  2. Step 2: Convert to fraction form
    28,215.22/38,935.38 = 15,465.91/x
  3. Step 3: Cross multiply
    28,215.22x = 38,935.38 × 15,465.91
  4. Step 4: Simplify right side
    28,215.22x = 602,171,082.90
  5. Step 5: Solve for x
    x = 602,171,082.90/28,215.22
  6. Step 6: Final answer
    x = 21,342.07

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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.