Home / 12,700.48-18,973.50-8,221.66

Finding the Fourth Proportional to 12,700.48, 18,973.50 and 8,221.66

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Solution

The fourth proportional to 12,700.48, 18,973.50 and 8,221.66 is: 12,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.48 : 18,973.50 = 8,221.66 : x
  2. Step 2: Convert to fraction form
    12,700.48/18,973.50 = 8,221.66/x
  3. Step 3: Cross multiply
    12,700.48x = 18,973.50 × 8,221.66
  4. Step 4: Simplify right side
    12,700.48x = 155,993,666.01
  5. Step 5: Solve for x
    x = 155,993,666.01/12,700.48
  6. Step 6: Final answer
    x = 12,282.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.