Home / 10,361.30-15,529.80-9,316.40

Finding the Fourth Proportional to 10,361.30, 15,529.80 and 9,316.40

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Solution

The fourth proportional to 10,361.30, 15,529.80 and 9,316.40 is: 13,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361.30 : 15,529.80 = 9,316.40 : x
  2. Step 2: Convert to fraction form
    10,361.30/15,529.80 = 9,316.40/x
  3. Step 3: Cross multiply
    10,361.30x = 15,529.80 × 9,316.40
  4. Step 4: Simplify right side
    10,361.30x = 144,681,828.72
  5. Step 5: Solve for x
    x = 144,681,828.72/10,361.30
  6. Step 6: Final answer
    x = 13,963.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.