Home / 28,528.17-39,365.85-15,779.32

Finding the Fourth Proportional to 28,528.17, 39,365.85 and 15,779.32

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Solution

The fourth proportional to 28,528.17, 39,365.85 and 15,779.32 is: 21,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.17 : 39,365.85 = 15,779.32 : x
  2. Step 2: Convert to fraction form
    28,528.17/39,365.85 = 15,779.32/x
  3. Step 3: Cross multiply
    28,528.17x = 39,365.85 × 15,779.32
  4. Step 4: Simplify right side
    28,528.17x = 621,166,344.22
  5. Step 5: Solve for x
    x = 621,166,344.22/28,528.17
  6. Step 6: Final answer
    x = 21,773.79

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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.