Home / 28,328.22-39,092.10-15,581.40

Finding the Fourth Proportional to 28,328.22, 39,092.10 and 15,581.40

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Solution

The fourth proportional to 28,328.22, 39,092.10 and 15,581.40 is: 21,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.22 : 39,092.10 = 15,581.40 : x
  2. Step 2: Convert to fraction form
    28,328.22/39,092.10 = 15,581.40/x
  3. Step 3: Cross multiply
    28,328.22x = 39,092.10 × 15,581.40
  4. Step 4: Simplify right side
    28,328.22x = 609,109,646.94
  5. Step 5: Solve for x
    x = 609,109,646.94/28,328.22
  6. Step 6: Final answer
    x = 21,501.87

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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.