Home / 15,145.64-20,899.93-9,480.14

Finding the Fourth Proportional to 15,145.64, 20,899.93 and 9,480.14

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Solution

The fourth proportional to 15,145.64, 20,899.93 and 9,480.14 is: 13,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.64 : 20,899.93 = 9,480.14 : x
  2. Step 2: Convert to fraction form
    15,145.64/20,899.93 = 9,480.14/x
  3. Step 3: Cross multiply
    15,145.64x = 20,899.93 × 9,480.14
  4. Step 4: Simplify right side
    15,145.64x = 198,134,262.39
  5. Step 5: Solve for x
    x = 198,134,262.39/15,145.64
  6. Step 6: Final answer
    x = 13,081.93

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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.