Home / 13,972.40-19,281.91-7,684.77

Finding the Fourth Proportional to 13,972.40, 19,281.91 and 7,684.77

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Solution

The fourth proportional to 13,972.40, 19,281.91 and 7,684.77 is: 10,604.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.40 : 19,281.91 = 7,684.77 : x
  2. Step 2: Convert to fraction form
    13,972.40/19,281.91 = 7,684.77/x
  3. Step 3: Cross multiply
    13,972.40x = 19,281.91 × 7,684.77
  4. Step 4: Simplify right side
    13,972.40x = 148,177,043.51
  5. Step 5: Solve for x
    x = 148,177,043.51/13,972.40
  6. Step 6: Final answer
    x = 10,604.99

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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.