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Finding the Fourth Proportional to 14,875.40, 20,528.08 and 8,161.08

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Solution

The fourth proportional to 14,875.40, 20,528.08 and 8,161.08 is: 11,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,875.40 : 20,528.08 = 8,161.08 : x
  2. Step 2: Convert to fraction form
    14,875.40/20,528.08 = 8,161.08/x
  3. Step 3: Cross multiply
    14,875.40x = 20,528.08 × 8,161.08
  4. Step 4: Simplify right side
    14,875.40x = 167,531,303.13
  5. Step 5: Solve for x
    x = 167,531,303.13/14,875.40
  6. Step 6: Final answer
    x = 11,262.31

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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.