Home / 12,858.27-19,267.55-8,681.91

Finding the Fourth Proportional to 12,858.27, 19,267.55 and 8,681.91

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Solution

The fourth proportional to 12,858.27, 19,267.55 and 8,681.91 is: 13,009.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.27 : 19,267.55 = 8,681.91 : x
  2. Step 2: Convert to fraction form
    12,858.27/19,267.55 = 8,681.91/x
  3. Step 3: Cross multiply
    12,858.27x = 19,267.55 × 8,681.91
  4. Step 4: Simplify right side
    12,858.27x = 167,279,135.02
  5. Step 5: Solve for x
    x = 167,279,135.02/12,858.27
  6. Step 6: Final answer
    x = 13,009.46

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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.