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Finding the Fourth Proportional to 14,653, 20,213.22 and 9,339.40

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Solution

The fourth proportional to 14,653, 20,213.22 and 9,339.40 is: 12,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653 : 20,213.22 = 9,339.40 : x
  2. Step 2: Convert to fraction form
    14,653/20,213.22 = 9,339.40/x
  3. Step 3: Cross multiply
    14,653x = 20,213.22 × 9,339.40
  4. Step 4: Simplify right side
    14,653x = 188,779,346.87
  5. Step 5: Solve for x
    x = 188,779,346.87/14,653
  6. Step 6: Final answer
    x = 12,883.32

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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.