Home / 15,009.24-20,709.90-9,417.72

Finding the Fourth Proportional to 15,009.24, 20,709.90 and 9,417.72

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Solution

The fourth proportional to 15,009.24, 20,709.90 and 9,417.72 is: 12,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.24 : 20,709.90 = 9,417.72 : x
  2. Step 2: Convert to fraction form
    15,009.24/20,709.90 = 9,417.72/x
  3. Step 3: Cross multiply
    15,009.24x = 20,709.90 × 9,417.72
  4. Step 4: Simplify right side
    15,009.24x = 195,040,039.43
  5. Step 5: Solve for x
    x = 195,040,039.43/15,009.24
  6. Step 6: Final answer
    x = 12,994.66

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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.