Home / 28,826.39-39,780.63-16,080.40

Finding the Fourth Proportional to 28,826.39, 39,780.63 and 16,080.40

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Solution

The fourth proportional to 28,826.39, 39,780.63 and 16,080.40 is: 22,191.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,826.39 : 39,780.63 = 16,080.40 : x
  2. Step 2: Convert to fraction form
    28,826.39/39,780.63 = 16,080.40/x
  3. Step 3: Cross multiply
    28,826.39x = 39,780.63 × 16,080.40
  4. Step 4: Simplify right side
    28,826.39x = 639,688,442.65
  5. Step 5: Solve for x
    x = 639,688,442.65/28,826.39
  6. Step 6: Final answer
    x = 22,191.07

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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.