Home / 19,659.90-27,130.95-11,161.74

Finding the Fourth Proportional to 19,659.90, 27,130.95 and 11,161.74

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Solution

The fourth proportional to 19,659.90, 27,130.95 and 11,161.74 is: 15,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.90 : 27,130.95 = 11,161.74 : x
  2. Step 2: Convert to fraction form
    19,659.90/27,130.95 = 11,161.74/x
  3. Step 3: Cross multiply
    19,659.90x = 27,130.95 × 11,161.74
  4. Step 4: Simplify right side
    19,659.90x = 302,828,609.85
  5. Step 5: Solve for x
    x = 302,828,609.85/19,659.90
  6. Step 6: Final answer
    x = 15,403.36

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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.