Home / 39,888.52-55,047.31-21,984.68

Finding the Fourth Proportional to 39,888.52, 55,047.31 and 21,984.68

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Solution

The fourth proportional to 39,888.52, 55,047.31 and 21,984.68 is: 30,339.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.52 : 55,047.31 = 21,984.68 : x
  2. Step 2: Convert to fraction form
    39,888.52/55,047.31 = 21,984.68/x
  3. Step 3: Cross multiply
    39,888.52x = 55,047.31 × 21,984.68
  4. Step 4: Simplify right side
    39,888.52x = 1,210,197,495.21
  5. Step 5: Solve for x
    x = 1,210,197,495.21/39,888.52
  6. Step 6: Final answer
    x = 30,339.49

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1.5x scale

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.