Home / 28,420.64-39,217.72-16,484.76

Finding the Fourth Proportional to 28,420.64, 39,217.72 and 16,484.76

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Solution

The fourth proportional to 28,420.64, 39,217.72 and 16,484.76 is: 22,747.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.64 : 39,217.72 = 16,484.76 : x
  2. Step 2: Convert to fraction form
    28,420.64/39,217.72 = 16,484.76/x
  3. Step 3: Cross multiply
    28,420.64x = 39,217.72 × 16,484.76
  4. Step 4: Simplify right side
    28,420.64x = 646,494,701.95
  5. Step 5: Solve for x
    x = 646,494,701.95/28,420.64
  6. Step 6: Final answer
    x = 22,747.37

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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.