Home / 28,459.95-39,221.58-20,488.33

Finding the Fourth Proportional to 28,459.95, 39,221.58 and 20,488.33

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Solution

The fourth proportional to 28,459.95, 39,221.58 and 20,488.33 is: 28,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.95 : 39,221.58 = 20,488.33 : x
  2. Step 2: Convert to fraction form
    28,459.95/39,221.58 = 20,488.33/x
  3. Step 3: Cross multiply
    28,459.95x = 39,221.58 × 20,488.33
  4. Step 4: Simplify right side
    28,459.95x = 803,584,674.16
  5. Step 5: Solve for x
    x = 803,584,674.16/28,459.95
  6. Step 6: Final answer
    x = 28,235.63

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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.