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Finding the Fourth Proportional to 14,060.40, 19,403.40 and 7,687.08

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Solution

The fourth proportional to 14,060.40, 19,403.40 and 7,687.08 is: 10,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,060.40 : 19,403.40 = 7,687.08 : x
  2. Step 2: Convert to fraction form
    14,060.40/19,403.40 = 7,687.08/x
  3. Step 3: Cross multiply
    14,060.40x = 19,403.40 × 7,687.08
  4. Step 4: Simplify right side
    14,060.40x = 149,155,488.07
  5. Step 5: Solve for x
    x = 149,155,488.07/14,060.40
  6. Step 6: Final answer
    x = 10,608.20

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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.