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Finding the Fourth Proportional to 13,014.93, 19,490.93 and 7,451.40

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Solution

The fourth proportional to 13,014.93, 19,490.93 and 7,451.40 is: 11,159.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,014.93 : 19,490.93 = 7,451.40 : x
  2. Step 2: Convert to fraction form
    13,014.93/19,490.93 = 7,451.40/x
  3. Step 3: Cross multiply
    13,014.93x = 19,490.93 × 7,451.40
  4. Step 4: Simplify right side
    13,014.93x = 145,234,678.55
  5. Step 5: Solve for x
    x = 145,234,678.55/13,014.93
  6. Step 6: Final answer
    x = 11,159.08

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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.