Home / 10,005.49-15,007.20-2,985.58

Finding the Fourth Proportional to 10,005.49, 15,007.20 and 2,985.58

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Solution

The fourth proportional to 10,005.49, 15,007.20 and 2,985.58 is: 4,478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.49 : 15,007.20 = 2,985.58 : x
  2. Step 2: Convert to fraction form
    10,005.49/15,007.20 = 2,985.58/x
  3. Step 3: Cross multiply
    10,005.49x = 15,007.20 × 2,985.58
  4. Step 4: Simplify right side
    10,005.49x = 44,805,196.18
  5. Step 5: Solve for x
    x = 44,805,196.18/10,005.49
  6. Step 6: Final answer
    x = 4,478.06

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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.