Home / 35,685.52-53,530.60-11,991.20

Finding the Fourth Proportional to 35,685.52, 53,530.60 and 11,991.20

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Solution

The fourth proportional to 35,685.52, 53,530.60 and 11,991.20 is: 17,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,685.52 : 53,530.60 = 11,991.20 : x
  2. Step 2: Convert to fraction form
    35,685.52/53,530.60 = 11,991.20/x
  3. Step 3: Cross multiply
    35,685.52x = 53,530.60 × 11,991.20
  4. Step 4: Simplify right side
    35,685.52x = 641,896,130.72
  5. Step 5: Solve for x
    x = 641,896,130.72/35,685.52
  6. Step 6: Final answer
    x = 17,987.58

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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.