Home / 13,931.38-19,225.62-7,643.76

Finding the Fourth Proportional to 13,931.38, 19,225.62 and 7,643.76

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Solution

The fourth proportional to 13,931.38, 19,225.62 and 7,643.76 is: 10,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.38 : 19,225.62 = 7,643.76 : x
  2. Step 2: Convert to fraction form
    13,931.38/19,225.62 = 7,643.76/x
  3. Step 3: Cross multiply
    13,931.38x = 19,225.62 × 7,643.76
  4. Step 4: Simplify right side
    13,931.38x = 146,956,025.13
  5. Step 5: Solve for x
    x = 146,956,025.13/13,931.38
  6. Step 6: Final answer
    x = 10,548.56

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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.