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Finding the Fourth Proportional to 13,048.58, 18,008.90 and 8,585.28

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Solution

The fourth proportional to 13,048.58, 18,008.90 and 8,585.28 is: 11,848.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,048.58 : 18,008.90 = 8,585.28 : x
  2. Step 2: Convert to fraction form
    13,048.58/18,008.90 = 8,585.28/x
  3. Step 3: Cross multiply
    13,048.58x = 18,008.90 × 8,585.28
  4. Step 4: Simplify right side
    13,048.58x = 154,611,448.99
  5. Step 5: Solve for x
    x = 154,611,448.99/13,048.58
  6. Step 6: Final answer
    x = 11,848.91

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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.