Home / 13,989.39-19,304.74-7,615.99

Finding the Fourth Proportional to 13,989.39, 19,304.74 and 7,615.99

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Solution

The fourth proportional to 13,989.39, 19,304.74 and 7,615.99 is: 10,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.39 : 19,304.74 = 7,615.99 : x
  2. Step 2: Convert to fraction form
    13,989.39/19,304.74 = 7,615.99/x
  3. Step 3: Cross multiply
    13,989.39x = 19,304.74 × 7,615.99
  4. Step 4: Simplify right side
    13,989.39x = 147,024,706.79
  5. Step 5: Solve for x
    x = 147,024,706.79/13,989.39
  6. Step 6: Final answer
    x = 10,509.73

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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.