Home / 20,595.12-28,421.76-12,211.68

Finding the Fourth Proportional to 20,595.12, 28,421.76 and 12,211.68

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Solution

The fourth proportional to 20,595.12, 28,421.76 and 12,211.68 is: 16,852.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.12 : 28,421.76 = 12,211.68 : x
  2. Step 2: Convert to fraction form
    20,595.12/28,421.76 = 12,211.68/x
  3. Step 3: Cross multiply
    20,595.12x = 28,421.76 × 12,211.68
  4. Step 4: Simplify right side
    20,595.12x = 347,077,438.16
  5. Step 5: Solve for x
    x = 347,077,438.16/20,595.12
  6. Step 6: Final answer
    x = 16,852.41

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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.