Home / 13,710.65-18,920.75-7,423.02

Finding the Fourth Proportional to 13,710.65, 18,920.75 and 7,423.02

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Solution

The fourth proportional to 13,710.65, 18,920.75 and 7,423.02 is: 10,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.65 : 18,920.75 = 7,423.02 : x
  2. Step 2: Convert to fraction form
    13,710.65/18,920.75 = 7,423.02/x
  3. Step 3: Cross multiply
    13,710.65x = 18,920.75 × 7,423.02
  4. Step 4: Simplify right side
    13,710.65x = 140,449,105.67
  5. Step 5: Solve for x
    x = 140,449,105.67/13,710.65
  6. Step 6: Final answer
    x = 10,243.80

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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.