Home / 13,972.50-19,282.46-7,685.28

Finding the Fourth Proportional to 13,972.50, 19,282.46 and 7,685.28

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Solution

The fourth proportional to 13,972.50, 19,282.46 and 7,685.28 is: 10,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.50 : 19,282.46 = 7,685.28 : x
  2. Step 2: Convert to fraction form
    13,972.50/19,282.46 = 7,685.28/x
  3. Step 3: Cross multiply
    13,972.50x = 19,282.46 × 7,685.28
  4. Step 4: Simplify right side
    13,972.50x = 148,191,065.76
  5. Step 5: Solve for x
    x = 148,191,065.76/13,972.50
  6. Step 6: Final answer
    x = 10,605.91

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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.