Home / 10,779.80-16,137.30-9,613.40

Finding the Fourth Proportional to 10,779.80, 16,137.30 and 9,613.40

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Solution

The fourth proportional to 10,779.80, 16,137.30 and 9,613.40 is: 14,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.80 : 16,137.30 = 9,613.40 : x
  2. Step 2: Convert to fraction form
    10,779.80/16,137.30 = 9,613.40/x
  3. Step 3: Cross multiply
    10,779.80x = 16,137.30 × 9,613.40
  4. Step 4: Simplify right side
    10,779.80x = 155,134,319.82
  5. Step 5: Solve for x
    x = 155,134,319.82/10,779.80
  6. Step 6: Final answer
    x = 14,391.21

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1.5x scale

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.