Home / 19,387.20-26,746.80-11,416.80

Finding the Fourth Proportional to 19,387.20, 26,746.80 and 11,416.80

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Solution

The fourth proportional to 19,387.20, 26,746.80 and 11,416.80 is: 15,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,387.20 : 26,746.80 = 11,416.80 : x
  2. Step 2: Convert to fraction form
    19,387.20/26,746.80 = 11,416.80/x
  3. Step 3: Cross multiply
    19,387.20x = 26,746.80 × 11,416.80
  4. Step 4: Simplify right side
    19,387.20x = 305,362,866.24
  5. Step 5: Solve for x
    x = 305,362,866.24/19,387.20
  6. Step 6: Final answer
    x = 15,750.75

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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.