Home / 28,421.36-39,221.76-16,487.60

Finding the Fourth Proportional to 28,421.36, 39,221.76 and 16,487.60

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Solution

The fourth proportional to 28,421.36, 39,221.76 and 16,487.60 is: 22,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.36 : 39,221.76 = 16,487.60 : x
  2. Step 2: Convert to fraction form
    28,421.36/39,221.76 = 16,487.60/x
  3. Step 3: Cross multiply
    28,421.36x = 39,221.76 × 16,487.60
  4. Step 4: Simplify right side
    28,421.36x = 646,672,690.18
  5. Step 5: Solve for x
    x = 646,672,690.18/28,421.36
  6. Step 6: Final answer
    x = 22,753.05

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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.