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Finding the Fourth Proportional to 23,365.60, 34,999.80 and 12,965.20

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Solution

The fourth proportional to 23,365.60, 34,999.80 and 12,965.20 is: 19,420.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,365.60 : 34,999.80 = 12,965.20 : x
  2. Step 2: Convert to fraction form
    23,365.60/34,999.80 = 12,965.20/x
  3. Step 3: Cross multiply
    23,365.60x = 34,999.80 × 12,965.20
  4. Step 4: Simplify right side
    23,365.60x = 453,779,406.96
  5. Step 5: Solve for x
    x = 453,779,406.96/23,365.60
  6. Step 6: Final answer
    x = 19,420.83

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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.