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Finding the Fourth Proportional to 14,618.68, 20,173.69 and 7,904.32

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Solution

The fourth proportional to 14,618.68, 20,173.69 and 7,904.32 is: 10,907.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.68 : 20,173.69 = 7,904.32 : x
  2. Step 2: Convert to fraction form
    14,618.68/20,173.69 = 7,904.32/x
  3. Step 3: Cross multiply
    14,618.68x = 20,173.69 × 7,904.32
  4. Step 4: Simplify right side
    14,618.68x = 159,459,301.34
  5. Step 5: Solve for x
    x = 159,459,301.34/14,618.68
  6. Step 6: Final answer
    x = 10,907.91

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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.