Home / 15,708.12-21,667.59-9,330.39

Finding the Fourth Proportional to 15,708.12, 21,667.59 and 9,330.39

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Solution

The fourth proportional to 15,708.12, 21,667.59 and 9,330.39 is: 12,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.12 : 21,667.59 = 9,330.39 : x
  2. Step 2: Convert to fraction form
    15,708.12/21,667.59 = 9,330.39/x
  3. Step 3: Cross multiply
    15,708.12x = 21,667.59 × 9,330.39
  4. Step 4: Simplify right side
    15,708.12x = 202,167,065.06
  5. Step 5: Solve for x
    x = 202,167,065.06/15,708.12
  6. Step 6: Final answer
    x = 12,870.23

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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.