Home / 12,948.40-19,384.20-8,570.80

Finding the Fourth Proportional to 12,948.40, 19,384.20 and 8,570.80

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Solution

The fourth proportional to 12,948.40, 19,384.20 and 8,570.80 is: 12,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948.40 : 19,384.20 = 8,570.80 : x
  2. Step 2: Convert to fraction form
    12,948.40/19,384.20 = 8,570.80/x
  3. Step 3: Cross multiply
    12,948.40x = 19,384.20 × 8,570.80
  4. Step 4: Simplify right side
    12,948.40x = 166,138,101.36
  5. Step 5: Solve for x
    x = 166,138,101.36/12,948.40
  6. Step 6: Final answer
    x = 12,830.78

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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.