Home / 15,678.06-21,631.86-9,304.35

Finding the Fourth Proportional to 15,678.06, 21,631.86 and 9,304.35

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Solution

The fourth proportional to 15,678.06, 21,631.86 and 9,304.35 is: 12,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.06 : 21,631.86 = 9,304.35 : x
  2. Step 2: Convert to fraction form
    15,678.06/21,631.86 = 9,304.35/x
  3. Step 3: Cross multiply
    15,678.06x = 21,631.86 × 9,304.35
  4. Step 4: Simplify right side
    15,678.06x = 201,270,396.59
  5. Step 5: Solve for x
    x = 201,270,396.59/15,678.06
  6. Step 6: Final answer
    x = 12,837.71

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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.