Home / 20,646.32-28,495.68-12,267.68

Finding the Fourth Proportional to 20,646.32, 28,495.68 and 12,267.68

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Solution

The fourth proportional to 20,646.32, 28,495.68 and 12,267.68 is: 16,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.32 : 28,495.68 = 12,267.68 : x
  2. Step 2: Convert to fraction form
    20,646.32/28,495.68 = 12,267.68/x
  3. Step 3: Cross multiply
    20,646.32x = 28,495.68 × 12,267.68
  4. Step 4: Simplify right side
    20,646.32x = 349,575,883.62
  5. Step 5: Solve for x
    x = 349,575,883.62/20,646.32
  6. Step 6: Final answer
    x = 16,931.63

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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.