Home / 20,645.58-28,486.02-12,148.07

Finding the Fourth Proportional to 20,645.58, 28,486.02 and 12,148.07

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Solution

The fourth proportional to 20,645.58, 28,486.02 and 12,148.07 is: 16,761.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.58 : 28,486.02 = 12,148.07 : x
  2. Step 2: Convert to fraction form
    20,645.58/28,486.02 = 12,148.07/x
  3. Step 3: Cross multiply
    20,645.58x = 28,486.02 × 12,148.07
  4. Step 4: Simplify right side
    20,645.58x = 346,050,164.98
  5. Step 5: Solve for x
    x = 346,050,164.98/20,645.58
  6. Step 6: Final answer
    x = 16,761.46

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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.