Home / 13,931.08-19,224.90-7,643.80

Finding the Fourth Proportional to 13,931.08, 19,224.90 and 7,643.80

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Solution

The fourth proportional to 13,931.08, 19,224.90 and 7,643.80 is: 10,548.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.08 : 19,224.90 = 7,643.80 : x
  2. Step 2: Convert to fraction form
    13,931.08/19,224.90 = 7,643.80/x
  3. Step 3: Cross multiply
    13,931.08x = 19,224.90 × 7,643.80
  4. Step 4: Simplify right side
    13,931.08x = 146,951,290.62
  5. Step 5: Solve for x
    x = 146,951,290.62/13,931.08
  6. Step 6: Final answer
    x = 10,548.45

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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.