Home / 13,693.50-18,897.70-7,725.04

Finding the Fourth Proportional to 13,693.50, 18,897.70 and 7,725.04

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Solution

The fourth proportional to 13,693.50, 18,897.70 and 7,725.04 is: 10,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.50 : 18,897.70 = 7,725.04 : x
  2. Step 2: Convert to fraction form
    13,693.50/18,897.70 = 7,725.04/x
  3. Step 3: Cross multiply
    13,693.50x = 18,897.70 × 7,725.04
  4. Step 4: Simplify right side
    13,693.50x = 145,985,488.41
  5. Step 5: Solve for x
    x = 145,985,488.41/13,693.50
  6. Step 6: Final answer
    x = 10,660.93

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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.