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Finding the Fourth Proportional to 18,460.64, 25,475.04 and 11,386.88

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Solution

The fourth proportional to 18,460.64, 25,475.04 and 11,386.88 is: 15,713.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.64 : 25,475.04 = 11,386.88 : x
  2. Step 2: Convert to fraction form
    18,460.64/25,475.04 = 11,386.88/x
  3. Step 3: Cross multiply
    18,460.64x = 25,475.04 × 11,386.88
  4. Step 4: Simplify right side
    18,460.64x = 290,081,223.48
  5. Step 5: Solve for x
    x = 290,081,223.48/18,460.64
  6. Step 6: Final answer
    x = 15,713.50

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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.