Home / 20,700.90-28,570.96-12,202.52

Finding the Fourth Proportional to 20,700.90, 28,570.96 and 12,202.52

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Solution

The fourth proportional to 20,700.90, 28,570.96 and 12,202.52 is: 16,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.90 : 28,570.96 = 12,202.52 : x
  2. Step 2: Convert to fraction form
    20,700.90/28,570.96 = 12,202.52/x
  3. Step 3: Cross multiply
    20,700.90x = 28,570.96 × 12,202.52
  4. Step 4: Simplify right side
    20,700.90x = 348,637,690.36
  5. Step 5: Solve for x
    x = 348,637,690.36/20,700.90
  6. Step 6: Final answer
    x = 16,841.67

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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.