Home / 28,920.30-39,909.25-16,000.05

Finding the Fourth Proportional to 28,920.30, 39,909.25 and 16,000.05

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Solution

The fourth proportional to 28,920.30, 39,909.25 and 16,000.05 is: 22,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.30 : 39,909.25 = 16,000.05 : x
  2. Step 2: Convert to fraction form
    28,920.30/39,909.25 = 16,000.05/x
  3. Step 3: Cross multiply
    28,920.30x = 39,909.25 × 16,000.05
  4. Step 4: Simplify right side
    28,920.30x = 638,549,995.46
  5. Step 5: Solve for x
    x = 638,549,995.46/28,920.30
  6. Step 6: Final answer
    x = 22,079.65

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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.