Home / 53,142.14-79,718.10-13,699.40

Finding the Fourth Proportional to 53,142.14, 79,718.10 and 13,699.40

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Solution

The fourth proportional to 53,142.14, 79,718.10 and 13,699.40 is: 20,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,142.14 : 79,718.10 = 13,699.40 : x
  2. Step 2: Convert to fraction form
    53,142.14/79,718.10 = 13,699.40/x
  3. Step 3: Cross multiply
    53,142.14x = 79,718.10 × 13,699.40
  4. Step 4: Simplify right side
    53,142.14x = 1,092,090,139.14
  5. Step 5: Solve for x
    x = 1,092,090,139.14/53,142.14
  6. Step 6: Final answer
    x = 20,550.36

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1.5x scale

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.