Home / 10,915.20-16,365.24-5,075.64

Finding the Fourth Proportional to 10,915.20, 16,365.24 and 5,075.64

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Solution

The fourth proportional to 10,915.20, 16,365.24 and 5,075.64 is: 7,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.20 : 16,365.24 = 5,075.64 : x
  2. Step 2: Convert to fraction form
    10,915.20/16,365.24 = 5,075.64/x
  3. Step 3: Cross multiply
    10,915.20x = 16,365.24 × 5,075.64
  4. Step 4: Simplify right side
    10,915.20x = 83,064,066.75
  5. Step 5: Solve for x
    x = 83,064,066.75/10,915.20
  6. Step 6: Final answer
    x = 7,609.94

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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.