Home / 15,461.54-21,339.21-9,796.81

Finding the Fourth Proportional to 15,461.54, 21,339.21 and 9,796.81

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Solution

The fourth proportional to 15,461.54, 21,339.21 and 9,796.81 is: 13,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.54 : 21,339.21 = 9,796.81 : x
  2. Step 2: Convert to fraction form
    15,461.54/21,339.21 = 9,796.81/x
  3. Step 3: Cross multiply
    15,461.54x = 21,339.21 × 9,796.81
  4. Step 4: Simplify right side
    15,461.54x = 209,056,255.56
  5. Step 5: Solve for x
    x = 209,056,255.56/15,461.54
  6. Step 6: Final answer
    x = 13,521.05

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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.