Home / 20,320.98-28,041.63-11,366.94

Finding the Fourth Proportional to 20,320.98, 28,041.63 and 11,366.94

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Solution

The fourth proportional to 20,320.98, 28,041.63 and 11,366.94 is: 15,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.98 : 28,041.63 = 11,366.94 : x
  2. Step 2: Convert to fraction form
    20,320.98/28,041.63 = 11,366.94/x
  3. Step 3: Cross multiply
    20,320.98x = 28,041.63 × 11,366.94
  4. Step 4: Simplify right side
    20,320.98x = 318,747,525.71
  5. Step 5: Solve for x
    x = 318,747,525.71/20,320.98
  6. Step 6: Final answer
    x = 15,685.64

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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.