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Finding the Fourth Proportional to 14,956.21, 22,439.57 and 9,978.51

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Solution

The fourth proportional to 14,956.21, 22,439.57 and 9,978.51 is: 14,971.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.21 : 22,439.57 = 9,978.51 : x
  2. Step 2: Convert to fraction form
    14,956.21/22,439.57 = 9,978.51/x
  3. Step 3: Cross multiply
    14,956.21x = 22,439.57 × 9,978.51
  4. Step 4: Simplify right side
    14,956.21x = 223,913,381.67
  5. Step 5: Solve for x
    x = 223,913,381.67/14,956.21
  6. Step 6: Final answer
    x = 14,971.26

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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.