Home / 28,880.20-43,320.30-13,328.20

Finding the Fourth Proportional to 28,880.20, 43,320.30 and 13,328.20

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Solution

The fourth proportional to 28,880.20, 43,320.30 and 13,328.20 is: 19,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.20 : 43,320.30 = 13,328.20 : x
  2. Step 2: Convert to fraction form
    28,880.20/43,320.30 = 13,328.20/x
  3. Step 3: Cross multiply
    28,880.20x = 43,320.30 × 13,328.20
  4. Step 4: Simplify right side
    28,880.20x = 577,381,622.46
  5. Step 5: Solve for x
    x = 577,381,622.46/28,880.20
  6. Step 6: Final answer
    x = 19,992.30

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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.