Home / 15,349.10-21,185.16-10,040.90

Finding the Fourth Proportional to 15,349.10, 21,185.16 and 10,040.90

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Solution

The fourth proportional to 15,349.10, 21,185.16 and 10,040.90 is: 13,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.10 : 21,185.16 = 10,040.90 : x
  2. Step 2: Convert to fraction form
    15,349.10/21,185.16 = 10,040.90/x
  3. Step 3: Cross multiply
    15,349.10x = 21,185.16 × 10,040.90
  4. Step 4: Simplify right side
    15,349.10x = 212,718,073.04
  5. Step 5: Solve for x
    x = 212,718,073.04/15,349.10
  6. Step 6: Final answer
    x = 13,858.67

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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.