Home / 21,140.34-31,708.11-5,559.18

Finding the Fourth Proportional to 21,140.34, 31,708.11 and 5,559.18

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Solution

The fourth proportional to 21,140.34, 31,708.11 and 5,559.18 is: 8,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.34 : 31,708.11 = 5,559.18 : x
  2. Step 2: Convert to fraction form
    21,140.34/31,708.11 = 5,559.18/x
  3. Step 3: Cross multiply
    21,140.34x = 31,708.11 × 5,559.18
  4. Step 4: Simplify right side
    21,140.34x = 176,271,090.95
  5. Step 5: Solve for x
    x = 176,271,090.95/21,140.34
  6. Step 6: Final answer
    x = 8,338.14

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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.