Home / 13,215.34-19,784.93-8,777.44

Finding the Fourth Proportional to 13,215.34, 19,784.93 and 8,777.44

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Solution

The fourth proportional to 13,215.34, 19,784.93 and 8,777.44 is: 13,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.34 : 19,784.93 = 8,777.44 : x
  2. Step 2: Convert to fraction form
    13,215.34/19,784.93 = 8,777.44/x
  3. Step 3: Cross multiply
    13,215.34x = 19,784.93 × 8,777.44
  4. Step 4: Simplify right side
    13,215.34x = 173,661,008.46
  5. Step 5: Solve for x
    x = 173,661,008.46/13,215.34
  6. Step 6: Final answer
    x = 13,140.87

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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.