Home / 21,179.19-31,762.31-7,135.46

Finding the Fourth Proportional to 21,179.19, 31,762.31 and 7,135.46

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Solution

The fourth proportional to 21,179.19, 31,762.31 and 7,135.46 is: 10,701.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.19 : 31,762.31 = 7,135.46 : x
  2. Step 2: Convert to fraction form
    21,179.19/31,762.31 = 7,135.46/x
  3. Step 3: Cross multiply
    21,179.19x = 31,762.31 × 7,135.46
  4. Step 4: Simplify right side
    21,179.19x = 226,638,692.51
  5. Step 5: Solve for x
    x = 226,638,692.51/21,179.19
  6. Step 6: Final answer
    x = 10,701.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.