Home / 10,694.81-15,929.43-10,215.08

Finding the Fourth Proportional to 10,694.81, 15,929.43 and 10,215.08

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Solution

The fourth proportional to 10,694.81, 15,929.43 and 10,215.08 is: 15,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,694.81 : 15,929.43 = 10,215.08 : x
  2. Step 2: Convert to fraction form
    10,694.81/15,929.43 = 10,215.08/x
  3. Step 3: Cross multiply
    10,694.81x = 15,929.43 × 10,215.08
  4. Step 4: Simplify right side
    10,694.81x = 162,720,322.16
  5. Step 5: Solve for x
    x = 162,720,322.16/10,694.81
  6. Step 6: Final answer
    x = 15,214.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.