Home / 13,931.43-19,225.70-7,643.80

Finding the Fourth Proportional to 13,931.43, 19,225.70 and 7,643.80

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Solution

The fourth proportional to 13,931.43, 19,225.70 and 7,643.80 is: 10,548.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.43 : 19,225.70 = 7,643.80 : x
  2. Step 2: Convert to fraction form
    13,931.43/19,225.70 = 7,643.80/x
  3. Step 3: Cross multiply
    13,931.43x = 19,225.70 × 7,643.80
  4. Step 4: Simplify right side
    13,931.43x = 146,957,405.66
  5. Step 5: Solve for x
    x = 146,957,405.66/13,931.43
  6. Step 6: Final answer
    x = 10,548.63

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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.