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Finding the Fourth Proportional to 14,028.30, 19,359 and 7,740.72

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Solution

The fourth proportional to 14,028.30, 19,359 and 7,740.72 is: 10,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028.30 : 19,359 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    14,028.30/19,359 = 7,740.72/x
  3. Step 3: Cross multiply
    14,028.30x = 19,359 × 7,740.72
  4. Step 4: Simplify right side
    14,028.30x = 149,852,598.48
  5. Step 5: Solve for x
    x = 149,852,598.48/14,028.30
  6. Step 6: Final answer
    x = 10,682.16

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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.