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Finding the Fourth Proportional to 14,355.70, 19,798.09 and 9,315.11

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Solution

The fourth proportional to 14,355.70, 19,798.09 and 9,315.11 is: 12,846.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.70 : 19,798.09 = 9,315.11 : x
  2. Step 2: Convert to fraction form
    14,355.70/19,798.09 = 9,315.11/x
  3. Step 3: Cross multiply
    14,355.70x = 19,798.09 × 9,315.11
  4. Step 4: Simplify right side
    14,355.70x = 184,421,386.14
  5. Step 5: Solve for x
    x = 184,421,386.14/14,355.70
  6. Step 6: Final answer
    x = 12,846.56

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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.