Home / 15,165.46-20,911.58-10,386.18

Finding the Fourth Proportional to 15,165.46, 20,911.58 and 10,386.18

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Solution

The fourth proportional to 15,165.46, 20,911.58 and 10,386.18 is: 14,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.46 : 20,911.58 = 10,386.18 : x
  2. Step 2: Convert to fraction form
    15,165.46/20,911.58 = 10,386.18/x
  3. Step 3: Cross multiply
    15,165.46x = 20,911.58 × 10,386.18
  4. Step 4: Simplify right side
    15,165.46x = 217,191,433.96
  5. Step 5: Solve for x
    x = 217,191,433.96/15,165.46
  6. Step 6: Final answer
    x = 14,321.45

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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.