Home / 21,385.80-32,068.58-12,503.70

Finding the Fourth Proportional to 21,385.80, 32,068.58 and 12,503.70

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Solution

The fourth proportional to 21,385.80, 32,068.58 and 12,503.70 is: 18,749.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.80 : 32,068.58 = 12,503.70 : x
  2. Step 2: Convert to fraction form
    21,385.80/32,068.58 = 12,503.70/x
  3. Step 3: Cross multiply
    21,385.80x = 32,068.58 × 12,503.70
  4. Step 4: Simplify right side
    21,385.80x = 400,975,841.23
  5. Step 5: Solve for x
    x = 400,975,841.23/21,385.80
  6. Step 6: Final answer
    x = 18,749.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.