Home / 28,345.34-39,108.46-18,279.56

Finding the Fourth Proportional to 28,345.34, 39,108.46 and 18,279.56

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Solution

The fourth proportional to 28,345.34, 39,108.46 and 18,279.56 is: 25,220.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.34 : 39,108.46 = 18,279.56 : x
  2. Step 2: Convert to fraction form
    28,345.34/39,108.46 = 18,279.56/x
  3. Step 3: Cross multiply
    28,345.34x = 39,108.46 × 18,279.56
  4. Step 4: Simplify right side
    28,345.34x = 714,885,446.72
  5. Step 5: Solve for x
    x = 714,885,446.72/28,345.34
  6. Step 6: Final answer
    x = 25,220.56

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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.