Home / 11,005.47-16,421.54-10,335.80

Finding the Fourth Proportional to 11,005.47, 16,421.54 and 10,335.80

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Solution

The fourth proportional to 11,005.47, 16,421.54 and 10,335.80 is: 15,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.47 : 16,421.54 = 10,335.80 : x
  2. Step 2: Convert to fraction form
    11,005.47/16,421.54 = 10,335.80/x
  3. Step 3: Cross multiply
    11,005.47x = 16,421.54 × 10,335.80
  4. Step 4: Simplify right side
    11,005.47x = 169,729,742.51
  5. Step 5: Solve for x
    x = 169,729,742.51/11,005.47
  6. Step 6: Final answer
    x = 15,422.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.