Home / 13,215.89-19,784.95-8,822.45

Finding the Fourth Proportional to 13,215.89, 19,784.95 and 8,822.45

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Solution

The fourth proportional to 13,215.89, 19,784.95 and 8,822.45 is: 13,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.89 : 19,784.95 = 8,822.45 : x
  2. Step 2: Convert to fraction form
    13,215.89/19,784.95 = 8,822.45/x
  3. Step 3: Cross multiply
    13,215.89x = 19,784.95 × 8,822.45
  4. Step 4: Simplify right side
    13,215.89x = 174,551,732.13
  5. Step 5: Solve for x
    x = 174,551,732.13/13,215.89
  6. Step 6: Final answer
    x = 13,207.72

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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.