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Finding the Fourth Proportional to 14,354.67, 19,807.16 and 8,688.45

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Solution

The fourth proportional to 14,354.67, 19,807.16 and 8,688.45 is: 11,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,354.67 : 19,807.16 = 8,688.45 : x
  2. Step 2: Convert to fraction form
    14,354.67/19,807.16 = 8,688.45/x
  3. Step 3: Cross multiply
    14,354.67x = 19,807.16 × 8,688.45
  4. Step 4: Simplify right side
    14,354.67x = 172,093,475.86
  5. Step 5: Solve for x
    x = 172,093,475.86/14,354.67
  6. Step 6: Final answer
    x = 11,988.68

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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.