Home / 28,249.90-38,983.55-15,502.77

Finding the Fourth Proportional to 28,249.90, 38,983.55 and 15,502.77

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Solution

The fourth proportional to 28,249.90, 38,983.55 and 15,502.77 is: 21,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.90 : 38,983.55 = 15,502.77 : x
  2. Step 2: Convert to fraction form
    28,249.90/38,983.55 = 15,502.77/x
  3. Step 3: Cross multiply
    28,249.90x = 38,983.55 × 15,502.77
  4. Step 4: Simplify right side
    28,249.90x = 604,353,009.43
  5. Step 5: Solve for x
    x = 604,353,009.43/28,249.90
  6. Step 6: Final answer
    x = 21,393.10

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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.