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Finding the Fourth Proportional to 14,066.45, 19,411.43 and 8,402.45

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Solution

The fourth proportional to 14,066.45, 19,411.43 and 8,402.45 is: 11,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,066.45 : 19,411.43 = 8,402.45 : x
  2. Step 2: Convert to fraction form
    14,066.45/19,411.43 = 8,402.45/x
  3. Step 3: Cross multiply
    14,066.45x = 19,411.43 × 8,402.45
  4. Step 4: Simplify right side
    14,066.45x = 163,103,430.93
  5. Step 5: Solve for x
    x = 163,103,430.93/14,066.45
  6. Step 6: Final answer
    x = 11,595.21

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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.