Home / 12,972.80-19,426.80-8,566.40

Finding the Fourth Proportional to 12,972.80, 19,426.80 and 8,566.40

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Solution

The fourth proportional to 12,972.80, 19,426.80 and 8,566.40 is: 12,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.80 : 19,426.80 = 8,566.40 : x
  2. Step 2: Convert to fraction form
    12,972.80/19,426.80 = 8,566.40/x
  3. Step 3: Cross multiply
    12,972.80x = 19,426.80 × 8,566.40
  4. Step 4: Simplify right side
    12,972.80x = 166,417,739.52
  5. Step 5: Solve for x
    x = 166,417,739.52/12,972.80
  6. Step 6: Final answer
    x = 12,828.21

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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.