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Finding the Fourth Proportional to 14,057.08, 21,089.08 and 9,905.20

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Solution

The fourth proportional to 14,057.08, 21,089.08 and 9,905.20 is: 14,860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,057.08 : 21,089.08 = 9,905.20 : x
  2. Step 2: Convert to fraction form
    14,057.08/21,089.08 = 9,905.20/x
  3. Step 3: Cross multiply
    14,057.08x = 21,089.08 × 9,905.20
  4. Step 4: Simplify right side
    14,057.08x = 208,891,555.22
  5. Step 5: Solve for x
    x = 208,891,555.22/14,057.08
  6. Step 6: Final answer
    x = 14,860.24

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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.