Home / 13,972.16-19,281.60-7,684.40

Finding the Fourth Proportional to 13,972.16, 19,281.60 and 7,684.40

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Solution

The fourth proportional to 13,972.16, 19,281.60 and 7,684.40 is: 10,604.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.16 : 19,281.60 = 7,684.40 : x
  2. Step 2: Convert to fraction form
    13,972.16/19,281.60 = 7,684.40/x
  3. Step 3: Cross multiply
    13,972.16x = 19,281.60 × 7,684.40
  4. Step 4: Simplify right side
    13,972.16x = 148,167,527.04
  5. Step 5: Solve for x
    x = 148,167,527.04/13,972.16
  6. Step 6: Final answer
    x = 10,604.48

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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.