Home / 14,899.87-20,560.80-8,928.55

Finding the Fourth Proportional to 14,899.87, 20,560.80 and 8,928.55

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Solution

The fourth proportional to 14,899.87, 20,560.80 and 8,928.55 is: 12,320.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,899.87 : 20,560.80 = 8,928.55 : x
  2. Step 2: Convert to fraction form
    14,899.87/20,560.80 = 8,928.55/x
  3. Step 3: Cross multiply
    14,899.87x = 20,560.80 × 8,928.55
  4. Step 4: Simplify right side
    14,899.87x = 183,578,130.84
  5. Step 5: Solve for x
    x = 183,578,130.84/14,899.87
  6. Step 6: Final answer
    x = 12,320.79

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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.