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Finding the Fourth Proportional to 17,788.61, 26,685.65 and 9,018.74

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Solution

The fourth proportional to 17,788.61, 26,685.65 and 9,018.74 is: 13,529.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,788.61 : 26,685.65 = 9,018.74 : x
  2. Step 2: Convert to fraction form
    17,788.61/26,685.65 = 9,018.74/x
  3. Step 3: Cross multiply
    17,788.61x = 26,685.65 × 9,018.74
  4. Step 4: Simplify right side
    17,788.61x = 240,671,028.34
  5. Step 5: Solve for x
    x = 240,671,028.34/17,788.61
  6. Step 6: Final answer
    x = 13,529.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.