Home / 19,290.48-26,611.87-12,486.70

Finding the Fourth Proportional to 19,290.48, 26,611.87 and 12,486.70

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Solution

The fourth proportional to 19,290.48, 26,611.87 and 12,486.70 is: 17,225.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.48 : 26,611.87 = 12,486.70 : x
  2. Step 2: Convert to fraction form
    19,290.48/26,611.87 = 12,486.70/x
  3. Step 3: Cross multiply
    19,290.48x = 26,611.87 × 12,486.70
  4. Step 4: Simplify right side
    19,290.48x = 332,294,383.82
  5. Step 5: Solve for x
    x = 332,294,383.82/19,290.48
  6. Step 6: Final answer
    x = 17,225.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.