Home / 14,811.60-20,430.40-8,838.64

Finding the Fourth Proportional to 14,811.60, 20,430.40 and 8,838.64

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Solution

The fourth proportional to 14,811.60, 20,430.40 and 8,838.64 is: 12,191.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,811.60 : 20,430.40 = 8,838.64 : x
  2. Step 2: Convert to fraction form
    14,811.60/20,430.40 = 8,838.64/x
  3. Step 3: Cross multiply
    14,811.60x = 20,430.40 × 8,838.64
  4. Step 4: Simplify right side
    14,811.60x = 180,576,950.66
  5. Step 5: Solve for x
    x = 180,576,950.66/14,811.60
  6. Step 6: Final answer
    x = 12,191.59

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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.