Home / 27,378.12-37,779.55-15,444.39

Finding the Fourth Proportional to 27,378.12, 37,779.55 and 15,444.39

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Solution

The fourth proportional to 27,378.12, 37,779.55 and 15,444.39 is: 21,311.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.12 : 37,779.55 = 15,444.39 : x
  2. Step 2: Convert to fraction form
    27,378.12/37,779.55 = 15,444.39/x
  3. Step 3: Cross multiply
    27,378.12x = 37,779.55 × 15,444.39
  4. Step 4: Simplify right side
    27,378.12x = 583,482,104.22
  5. Step 5: Solve for x
    x = 583,482,104.22/27,378.12
  6. Step 6: Final answer
    x = 21,311.99

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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.