Home / 11,400.30-15,743.28-10,779.06

Finding the Fourth Proportional to 11,400.30, 15,743.28 and 10,779.06

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Solution

The fourth proportional to 11,400.30, 15,743.28 and 10,779.06 is: 14,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,400.30 : 15,743.28 = 10,779.06 : x
  2. Step 2: Convert to fraction form
    11,400.30/15,743.28 = 10,779.06/x
  3. Step 3: Cross multiply
    11,400.30x = 15,743.28 × 10,779.06
  4. Step 4: Simplify right side
    11,400.30x = 169,697,759.72
  5. Step 5: Solve for x
    x = 169,697,759.72/11,400.30
  6. Step 6: Final answer
    x = 14,885.38

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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.