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Finding the Fourth Proportional to 20,570.91, 30,847.65 and 8,088.96

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Solution

The fourth proportional to 20,570.91, 30,847.65 and 8,088.96 is: 12,130.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.91 : 30,847.65 = 8,088.96 : x
  2. Step 2: Convert to fraction form
    20,570.91/30,847.65 = 8,088.96/x
  3. Step 3: Cross multiply
    20,570.91x = 30,847.65 × 8,088.96
  4. Step 4: Simplify right side
    20,570.91x = 249,525,406.94
  5. Step 5: Solve for x
    x = 249,525,406.94/20,570.91
  6. Step 6: Final answer
    x = 12,130.01

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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.