Home / 10,398.48-14,360.80-8,979.36

Finding the Fourth Proportional to 10,398.48, 14,360.80 and 8,979.36

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Solution

The fourth proportional to 10,398.48, 14,360.80 and 8,979.36 is: 12,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.48 : 14,360.80 = 8,979.36 : x
  2. Step 2: Convert to fraction form
    10,398.48/14,360.80 = 8,979.36/x
  3. Step 3: Cross multiply
    10,398.48x = 14,360.80 × 8,979.36
  4. Step 4: Simplify right side
    10,398.48x = 128,950,793.09
  5. Step 5: Solve for x
    x = 128,950,793.09/10,398.48
  6. Step 6: Final answer
    x = 12,400.93

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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.