Home / 13,931.52-19,225.80-7,644.30

Finding the Fourth Proportional to 13,931.52, 19,225.80 and 7,644.30

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Solution

The fourth proportional to 13,931.52, 19,225.80 and 7,644.30 is: 10,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.52 : 19,225.80 = 7,644.30 : x
  2. Step 2: Convert to fraction form
    13,931.52/19,225.80 = 7,644.30/x
  3. Step 3: Cross multiply
    13,931.52x = 19,225.80 × 7,644.30
  4. Step 4: Simplify right side
    13,931.52x = 146,967,782.94
  5. Step 5: Solve for x
    x = 146,967,782.94/13,931.52
  6. Step 6: Final answer
    x = 10,549.30

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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.