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Finding the Fourth Proportional to 14,860.64, 20,507.72 and 8,146.51

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Solution

The fourth proportional to 14,860.64, 20,507.72 and 8,146.51 is: 11,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,860.64 : 20,507.72 = 8,146.51 : x
  2. Step 2: Convert to fraction form
    14,860.64/20,507.72 = 8,146.51/x
  3. Step 3: Cross multiply
    14,860.64x = 20,507.72 × 8,146.51
  4. Step 4: Simplify right side
    14,860.64x = 167,066,346.06
  5. Step 5: Solve for x
    x = 167,066,346.06/14,860.64
  6. Step 6: Final answer
    x = 11,242.20

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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.