Home / 20,501.40-28,294.62-11,550.63

Finding the Fourth Proportional to 20,501.40, 28,294.62 and 11,550.63

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Solution

The fourth proportional to 20,501.40, 28,294.62 and 11,550.63 is: 15,941.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.40 : 28,294.62 = 11,550.63 : x
  2. Step 2: Convert to fraction form
    20,501.40/28,294.62 = 11,550.63/x
  3. Step 3: Cross multiply
    20,501.40x = 28,294.62 × 11,550.63
  4. Step 4: Simplify right side
    20,501.40x = 326,820,686.61
  5. Step 5: Solve for x
    x = 326,820,686.61/20,501.40
  6. Step 6: Final answer
    x = 15,941.38

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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.