Home / 10,479.30-15,718.95-2,688.11

Finding the Fourth Proportional to 10,479.30, 15,718.95 and 2,688.11

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Solution

The fourth proportional to 10,479.30, 15,718.95 and 2,688.11 is: 4,032.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.30 : 15,718.95 = 2,688.11 : x
  2. Step 2: Convert to fraction form
    10,479.30/15,718.95 = 2,688.11/x
  3. Step 3: Cross multiply
    10,479.30x = 15,718.95 × 2,688.11
  4. Step 4: Simplify right side
    10,479.30x = 42,254,174.65
  5. Step 5: Solve for x
    x = 42,254,174.65/10,479.30
  6. Step 6: Final answer
    x = 4,032.16

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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.