Home / 15,386.44-21,229.86-9,417.64

Finding the Fourth Proportional to 15,386.44, 21,229.86 and 9,417.64

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Solution

The fourth proportional to 15,386.44, 21,229.86 and 9,417.64 is: 12,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.44 : 21,229.86 = 9,417.64 : x
  2. Step 2: Convert to fraction form
    15,386.44/21,229.86 = 9,417.64/x
  3. Step 3: Cross multiply
    15,386.44x = 21,229.86 × 9,417.64
  4. Step 4: Simplify right side
    15,386.44x = 199,935,178.73
  5. Step 5: Solve for x
    x = 199,935,178.73/15,386.44
  6. Step 6: Final answer
    x = 12,994.25

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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.