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Finding the Fourth Proportional to 10,368, 14,312.28 and 7,015.44

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Solution

The fourth proportional to 10,368, 14,312.28 and 7,015.44 is: 9,684.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368 : 14,312.28 = 7,015.44 : x
  2. Step 2: Convert to fraction form
    10,368/14,312.28 = 7,015.44/x
  3. Step 3: Cross multiply
    10,368x = 14,312.28 × 7,015.44
  4. Step 4: Simplify right side
    10,368x = 100,406,941.60
  5. Step 5: Solve for x
    x = 100,406,941.60/10,368
  6. Step 6: Final answer
    x = 9,684.31

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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.