Home / 13,158.07-19,741.70-8,221.93

Finding the Fourth Proportional to 13,158.07, 19,741.70 and 8,221.93

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Solution

The fourth proportional to 13,158.07, 19,741.70 and 8,221.93 is: 12,335.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.07 : 19,741.70 = 8,221.93 : x
  2. Step 2: Convert to fraction form
    13,158.07/19,741.70 = 8,221.93/x
  3. Step 3: Cross multiply
    13,158.07x = 19,741.70 × 8,221.93
  4. Step 4: Simplify right side
    13,158.07x = 162,314,875.48
  5. Step 5: Solve for x
    x = 162,314,875.48/13,158.07
  6. Step 6: Final answer
    x = 12,335.77

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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.