Home / 21,071.39-29,080.37-11,641.78

Finding the Fourth Proportional to 21,071.39, 29,080.37 and 11,641.78

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Solution

The fourth proportional to 21,071.39, 29,080.37 and 11,641.78 is: 16,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.39 : 29,080.37 = 11,641.78 : x
  2. Step 2: Convert to fraction form
    21,071.39/29,080.37 = 11,641.78/x
  3. Step 3: Cross multiply
    21,071.39x = 29,080.37 × 11,641.78
  4. Step 4: Simplify right side
    21,071.39x = 338,547,106.25
  5. Step 5: Solve for x
    x = 338,547,106.25/21,071.39
  6. Step 6: Final answer
    x = 16,066.67

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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.