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Finding the Fourth Proportional to 14,057.40, 19,405.53 and 8,955.12

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Solution

The fourth proportional to 14,057.40, 19,405.53 and 8,955.12 is: 12,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,057.40 : 19,405.53 = 8,955.12 : x
  2. Step 2: Convert to fraction form
    14,057.40/19,405.53 = 8,955.12/x
  3. Step 3: Cross multiply
    14,057.40x = 19,405.53 × 8,955.12
  4. Step 4: Simplify right side
    14,057.40x = 173,778,849.81
  5. Step 5: Solve for x
    x = 173,778,849.81/14,057.40
  6. Step 6: Final answer
    x = 12,362.09

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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.