Home / 35,430.48-53,131.32-12,935.88

Finding the Fourth Proportional to 35,430.48, 53,131.32 and 12,935.88

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Solution

The fourth proportional to 35,430.48, 53,131.32 and 12,935.88 is: 19,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,430.48 : 53,131.32 = 12,935.88 : x
  2. Step 2: Convert to fraction form
    35,430.48/53,131.32 = 12,935.88/x
  3. Step 3: Cross multiply
    35,430.48x = 53,131.32 × 12,935.88
  4. Step 4: Simplify right side
    35,430.48x = 687,300,379.76
  5. Step 5: Solve for x
    x = 687,300,379.76/35,430.48
  6. Step 6: Final answer
    x = 19,398.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.