Home / 39,890.08-55,048.95-21,984.83

Finding the Fourth Proportional to 39,890.08, 55,048.95 and 21,984.83

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Solution

The fourth proportional to 39,890.08, 55,048.95 and 21,984.83 is: 30,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.08 : 55,048.95 = 21,984.83 : x
  2. Step 2: Convert to fraction form
    39,890.08/55,048.95 = 21,984.83/x
  3. Step 3: Cross multiply
    39,890.08x = 55,048.95 × 21,984.83
  4. Step 4: Simplify right side
    39,890.08x = 1,210,241,532.18
  5. Step 5: Solve for x
    x = 1,210,241,532.18/39,890.08
  6. Step 6: Final answer
    x = 30,339.41

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Double scale
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Similar ratio
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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.