Home / 38,206.08-52,721.28-21,438.72

Finding the Fourth Proportional to 38,206.08, 52,721.28 and 21,438.72

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Solution

The fourth proportional to 38,206.08, 52,721.28 and 21,438.72 is: 29,583.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,206.08 : 52,721.28 = 21,438.72 : x
  2. Step 2: Convert to fraction form
    38,206.08/52,721.28 = 21,438.72/x
  3. Step 3: Cross multiply
    38,206.08x = 52,721.28 × 21,438.72
  4. Step 4: Simplify right side
    38,206.08x = 1,130,276,759.96
  5. Step 5: Solve for x
    x = 1,130,276,759.96/38,206.08
  6. Step 6: Final answer
    x = 29,583.69

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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.