Home / 20,653.13-28,503.75-12,269.63

Finding the Fourth Proportional to 20,653.13, 28,503.75 and 12,269.63

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Solution

The fourth proportional to 20,653.13, 28,503.75 and 12,269.63 is: 16,933.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.13 : 28,503.75 = 12,269.63 : x
  2. Step 2: Convert to fraction form
    20,653.13/28,503.75 = 12,269.63/x
  3. Step 3: Cross multiply
    20,653.13x = 28,503.75 × 12,269.63
  4. Step 4: Simplify right side
    20,653.13x = 349,730,323.59
  5. Step 5: Solve for x
    x = 349,730,323.59/20,653.13
  6. Step 6: Final answer
    x = 16,933.53

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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.