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Finding the Fourth Proportional to 15,567, 21,484.26 and 8,853.63

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Solution

The fourth proportional to 15,567, 21,484.26 and 8,853.63 is: 12,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,567 : 21,484.26 = 8,853.63 : x
  2. Step 2: Convert to fraction form
    15,567/21,484.26 = 8,853.63/x
  3. Step 3: Cross multiply
    15,567x = 21,484.26 × 8,853.63
  4. Step 4: Simplify right side
    15,567x = 190,213,688.86
  5. Step 5: Solve for x
    x = 190,213,688.86/15,567
  6. Step 6: Final answer
    x = 12,219.03

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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.