Home / 31,479.23-47,189.16-15,669.32

Finding the Fourth Proportional to 31,479.23, 47,189.16 and 15,669.32

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Solution

The fourth proportional to 31,479.23, 47,189.16 and 15,669.32 is: 23,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.23 : 47,189.16 = 15,669.32 : x
  2. Step 2: Convert to fraction form
    31,479.23/47,189.16 = 15,669.32/x
  3. Step 3: Cross multiply
    31,479.23x = 47,189.16 × 15,669.32
  4. Step 4: Simplify right side
    31,479.23x = 739,421,812.63
  5. Step 5: Solve for x
    x = 739,421,812.63/31,479.23
  6. Step 6: Final answer
    x = 23,489.19

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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.