Home / 10,395.84-15,588.30-5,130.64

Finding the Fourth Proportional to 10,395.84, 15,588.30 and 5,130.64

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Solution

The fourth proportional to 10,395.84, 15,588.30 and 5,130.64 is: 7,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,395.84 : 15,588.30 = 5,130.64 : x
  2. Step 2: Convert to fraction form
    10,395.84/15,588.30 = 5,130.64/x
  3. Step 3: Cross multiply
    10,395.84x = 15,588.30 × 5,130.64
  4. Step 4: Simplify right side
    10,395.84x = 79,977,965.38
  5. Step 5: Solve for x
    x = 79,977,965.38/10,395.84
  6. Step 6: Final answer
    x = 7,693.26

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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.