Home / 28,149.16-38,843.70-15,573.64

Finding the Fourth Proportional to 28,149.16, 38,843.70 and 15,573.64

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Solution

The fourth proportional to 28,149.16, 38,843.70 and 15,573.64 is: 21,490.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.16 : 38,843.70 = 15,573.64 : x
  2. Step 2: Convert to fraction form
    28,149.16/38,843.70 = 15,573.64/x
  3. Step 3: Cross multiply
    28,149.16x = 38,843.70 × 15,573.64
  4. Step 4: Simplify right side
    28,149.16x = 604,937,800.07
  5. Step 5: Solve for x
    x = 604,937,800.07/28,149.16
  6. Step 6: Final answer
    x = 21,490.44

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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.