Home / 15,330.11-21,156.14-9,364.46

Finding the Fourth Proportional to 15,330.11, 21,156.14 and 9,364.46

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Solution

The fourth proportional to 15,330.11, 21,156.14 and 9,364.46 is: 12,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.11 : 21,156.14 = 9,364.46 : x
  2. Step 2: Convert to fraction form
    15,330.11/21,156.14 = 9,364.46/x
  3. Step 3: Cross multiply
    15,330.11x = 21,156.14 × 9,364.46
  4. Step 4: Simplify right side
    15,330.11x = 198,115,779.96
  5. Step 5: Solve for x
    x = 198,115,779.96/15,330.11
  6. Step 6: Final answer
    x = 12,923.31

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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.