Home / 30,531.20-45,788.34-10,807.16

Finding the Fourth Proportional to 30,531.20, 45,788.34 and 10,807.16

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Solution

The fourth proportional to 30,531.20, 45,788.34 and 10,807.16 is: 16,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.20 : 45,788.34 = 10,807.16 : x
  2. Step 2: Convert to fraction form
    30,531.20/45,788.34 = 10,807.16/x
  3. Step 3: Cross multiply
    30,531.20x = 45,788.34 × 10,807.16
  4. Step 4: Simplify right side
    30,531.20x = 494,841,916.51
  5. Step 5: Solve for x
    x = 494,841,916.51/30,531.20
  6. Step 6: Final answer
    x = 16,207.75

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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.