Home / 21,110.55-31,665.81-10,011.18

Finding the Fourth Proportional to 21,110.55, 31,665.81 and 10,011.18

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Solution

The fourth proportional to 21,110.55, 31,665.81 and 10,011.18 is: 15,016.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.55 : 31,665.81 = 10,011.18 : x
  2. Step 2: Convert to fraction form
    21,110.55/31,665.81 = 10,011.18/x
  3. Step 3: Cross multiply
    21,110.55x = 31,665.81 × 10,011.18
  4. Step 4: Simplify right side
    21,110.55x = 317,012,123.76
  5. Step 5: Solve for x
    x = 317,012,123.76/21,110.55
  6. Step 6: Final answer
    x = 15,016.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.