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Finding the Fourth Proportional to 13,262.64, 19,870.59 and 7,008.87

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Solution

The fourth proportional to 13,262.64, 19,870.59 and 7,008.87 is: 10,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262.64 : 19,870.59 = 7,008.87 : x
  2. Step 2: Convert to fraction form
    13,262.64/19,870.59 = 7,008.87/x
  3. Step 3: Cross multiply
    13,262.64x = 19,870.59 × 7,008.87
  4. Step 4: Simplify right side
    13,262.64x = 139,270,382.13
  5. Step 5: Solve for x
    x = 139,270,382.13/13,262.64
  6. Step 6: Final answer
    x = 10,500.95

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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.