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Finding the Fourth Proportional to 18,484.40, 25,482.12 and 11,406.08

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Solution

The fourth proportional to 18,484.40, 25,482.12 and 11,406.08 is: 15,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,484.40 : 25,482.12 = 11,406.08 : x
  2. Step 2: Convert to fraction form
    18,484.40/25,482.12 = 11,406.08/x
  3. Step 3: Cross multiply
    18,484.40x = 25,482.12 × 11,406.08
  4. Step 4: Simplify right side
    18,484.40x = 290,651,099.29
  5. Step 5: Solve for x
    x = 290,651,099.29/18,484.40
  6. Step 6: Final answer
    x = 15,724.13

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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.