Home / 28,369.16-39,149.11-15,622.08

Finding the Fourth Proportional to 28,369.16, 39,149.11 and 15,622.08

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Solution

The fourth proportional to 28,369.16, 39,149.11 and 15,622.08 is: 21,558.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.16 : 39,149.11 = 15,622.08 : x
  2. Step 2: Convert to fraction form
    28,369.16/39,149.11 = 15,622.08/x
  3. Step 3: Cross multiply
    28,369.16x = 39,149.11 × 15,622.08
  4. Step 4: Simplify right side
    28,369.16x = 611,590,528.35
  5. Step 5: Solve for x
    x = 611,590,528.35/28,369.16
  6. Step 6: Final answer
    x = 21,558.29

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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.