Home / 10,519.09-15,779.10-3,123.40

Finding the Fourth Proportional to 10,519.09, 15,779.10 and 3,123.40

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Solution

The fourth proportional to 10,519.09, 15,779.10 and 3,123.40 is: 4,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.09 : 15,779.10 = 3,123.40 : x
  2. Step 2: Convert to fraction form
    10,519.09/15,779.10 = 3,123.40/x
  3. Step 3: Cross multiply
    10,519.09x = 15,779.10 × 3,123.40
  4. Step 4: Simplify right side
    10,519.09x = 49,284,440.94
  5. Step 5: Solve for x
    x = 49,284,440.94/10,519.09
  6. Step 6: Final answer
    x = 4,685.24

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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.