Home / 13,718.58-18,931.50-7,750.24

Finding the Fourth Proportional to 13,718.58, 18,931.50 and 7,750.24

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Solution

The fourth proportional to 13,718.58, 18,931.50 and 7,750.24 is: 10,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.58 : 18,931.50 = 7,750.24 : x
  2. Step 2: Convert to fraction form
    13,718.58/18,931.50 = 7,750.24/x
  3. Step 3: Cross multiply
    13,718.58x = 18,931.50 × 7,750.24
  4. Step 4: Simplify right side
    13,718.58x = 146,723,668.56
  5. Step 5: Solve for x
    x = 146,723,668.56/13,718.58
  6. Step 6: Final answer
    x = 10,695.25

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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.