Home / 10,624.14-15,858.30-9,378.78

Finding the Fourth Proportional to 10,624.14, 15,858.30 and 9,378.78

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Solution

The fourth proportional to 10,624.14, 15,858.30 and 9,378.78 is: 13,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,624.14 : 15,858.30 = 9,378.78 : x
  2. Step 2: Convert to fraction form
    10,624.14/15,858.30 = 9,378.78/x
  3. Step 3: Cross multiply
    10,624.14x = 15,858.30 × 9,378.78
  4. Step 4: Simplify right side
    10,624.14x = 148,731,506.87
  5. Step 5: Solve for x
    x = 148,731,506.87/10,624.14
  6. Step 6: Final answer
    x = 13,999.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.