Home / 28,347.84-39,117.60-15,773.76

Finding the Fourth Proportional to 28,347.84, 39,117.60 and 15,773.76

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Solution

The fourth proportional to 28,347.84, 39,117.60 and 15,773.76 is: 21,766.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.84 : 39,117.60 = 15,773.76 : x
  2. Step 2: Convert to fraction form
    28,347.84/39,117.60 = 15,773.76/x
  3. Step 3: Cross multiply
    28,347.84x = 39,117.60 × 15,773.76
  4. Step 4: Simplify right side
    28,347.84x = 617,031,634.18
  5. Step 5: Solve for x
    x = 617,031,634.18/28,347.84
  6. Step 6: Final answer
    x = 21,766.44

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Double scale
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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.