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Finding the Fourth Proportional to 14,266.71, 19,688.00 and 7,979.13

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Solution

The fourth proportional to 14,266.71, 19,688.00 and 7,979.13 is: 11,011.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.71 : 19,688.00 = 7,979.13 : x
  2. Step 2: Convert to fraction form
    14,266.71/19,688.00 = 7,979.13/x
  3. Step 3: Cross multiply
    14,266.71x = 19,688.00 × 7,979.13
  4. Step 4: Simplify right side
    14,266.71x = 157,093,071.54
  5. Step 5: Solve for x
    x = 157,093,071.54/14,266.71
  6. Step 6: Final answer
    x = 11,011.16

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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.