Home / 30,207.88-41,688.16-16,779.12

Finding the Fourth Proportional to 30,207.88, 41,688.16 and 16,779.12

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Solution

The fourth proportional to 30,207.88, 41,688.16 and 16,779.12 is: 23,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.88 : 41,688.16 = 16,779.12 : x
  2. Step 2: Convert to fraction form
    30,207.88/41,688.16 = 16,779.12/x
  3. Step 3: Cross multiply
    30,207.88x = 41,688.16 × 16,779.12
  4. Step 4: Simplify right side
    30,207.88x = 699,490,639.22
  5. Step 5: Solve for x
    x = 699,490,639.22/30,207.88
  6. Step 6: Final answer
    x = 23,155.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.