Home / 53,150.13-79,734.99-21,987.81

Finding the Fourth Proportional to 53,150.13, 79,734.99 and 21,987.81

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Solution

The fourth proportional to 53,150.13, 79,734.99 and 21,987.81 is: 32,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,150.13 : 79,734.99 = 21,987.81 : x
  2. Step 2: Convert to fraction form
    53,150.13/79,734.99 = 21,987.81/x
  3. Step 3: Cross multiply
    53,150.13x = 79,734.99 × 21,987.81
  4. Step 4: Simplify right side
    53,150.13x = 1,753,197,810.47
  5. Step 5: Solve for x
    x = 1,753,197,810.47/53,150.13
  6. Step 6: Final answer
    x = 32,985.77

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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.