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Finding the Fourth Proportional to 13,752.84, 18,978.84 and 7,465.08

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Solution

The fourth proportional to 13,752.84, 18,978.84 and 7,465.08 is: 10,301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.84 : 18,978.84 = 7,465.08 : x
  2. Step 2: Convert to fraction form
    13,752.84/18,978.84 = 7,465.08/x
  3. Step 3: Cross multiply
    13,752.84x = 18,978.84 × 7,465.08
  4. Step 4: Simplify right side
    13,752.84x = 141,678,558.91
  5. Step 5: Solve for x
    x = 141,678,558.91/13,752.84
  6. Step 6: Final answer
    x = 10,301.77

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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.