Home / 28,619.28-42,928.71-8,897.80

Finding the Fourth Proportional to 28,619.28, 42,928.71 and 8,897.80

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Solution

The fourth proportional to 28,619.28, 42,928.71 and 8,897.80 is: 13,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.28 : 42,928.71 = 8,897.80 : x
  2. Step 2: Convert to fraction form
    28,619.28/42,928.71 = 8,897.80/x
  3. Step 3: Cross multiply
    28,619.28x = 42,928.71 × 8,897.80
  4. Step 4: Simplify right side
    28,619.28x = 381,971,075.84
  5. Step 5: Solve for x
    x = 381,971,075.84/28,619.28
  6. Step 6: Final answer
    x = 13,346.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.