Home / 28,108.62-38,790.70-15,362.51

Finding the Fourth Proportional to 28,108.62, 38,790.70 and 15,362.51

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Solution

The fourth proportional to 28,108.62, 38,790.70 and 15,362.51 is: 21,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.62 : 38,790.70 = 15,362.51 : x
  2. Step 2: Convert to fraction form
    28,108.62/38,790.70 = 15,362.51/x
  3. Step 3: Cross multiply
    28,108.62x = 38,790.70 × 15,362.51
  4. Step 4: Simplify right side
    28,108.62x = 595,922,502.49
  5. Step 5: Solve for x
    x = 595,922,502.49/28,108.62
  6. Step 6: Final answer
    x = 21,200.70

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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.