Home / 20,430.25-28,152.82-14,754.98

Finding the Fourth Proportional to 20,430.25, 28,152.82 and 14,754.98

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Solution

The fourth proportional to 20,430.25, 28,152.82 and 14,754.98 is: 20,332.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.25 : 28,152.82 = 14,754.98 : x
  2. Step 2: Convert to fraction form
    20,430.25/28,152.82 = 14,754.98/x
  3. Step 3: Cross multiply
    20,430.25x = 28,152.82 × 14,754.98
  4. Step 4: Simplify right side
    20,430.25x = 415,394,296.04
  5. Step 5: Solve for x
    x = 415,394,296.04/20,430.25
  6. Step 6: Final answer
    x = 20,332.32

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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.