Home / 10,478.65-15,718.98-3,903.28

Finding the Fourth Proportional to 10,478.65, 15,718.98 and 3,903.28

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Solution

The fourth proportional to 10,478.65, 15,718.98 and 3,903.28 is: 5,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.65 : 15,718.98 = 3,903.28 : x
  2. Step 2: Convert to fraction form
    10,478.65/15,718.98 = 3,903.28/x
  3. Step 3: Cross multiply
    10,478.65x = 15,718.98 × 3,903.28
  4. Step 4: Simplify right side
    10,478.65x = 61,355,580.25
  5. Step 5: Solve for x
    x = 61,355,580.25/10,478.65
  6. Step 6: Final answer
    x = 5,855.29

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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.