Home / 13,639.17-20,440.08-10,304.67

Finding the Fourth Proportional to 13,639.17, 20,440.08 and 10,304.67

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Solution

The fourth proportional to 13,639.17, 20,440.08 and 10,304.67 is: 15,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.17 : 20,440.08 = 10,304.67 : x
  2. Step 2: Convert to fraction form
    13,639.17/20,440.08 = 10,304.67/x
  3. Step 3: Cross multiply
    13,639.17x = 20,440.08 × 10,304.67
  4. Step 4: Simplify right side
    13,639.17x = 210,628,394.47
  5. Step 5: Solve for x
    x = 210,628,394.47/13,639.17
  6. Step 6: Final answer
    x = 15,442.91

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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.