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Finding the Fourth Proportional to 13,802.68, 19,047.72 and 7,515.08

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Solution

The fourth proportional to 13,802.68, 19,047.72 and 7,515.08 is: 10,370.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.68 : 19,047.72 = 7,515.08 : x
  2. Step 2: Convert to fraction form
    13,802.68/19,047.72 = 7,515.08/x
  3. Step 3: Cross multiply
    13,802.68x = 19,047.72 × 7,515.08
  4. Step 4: Simplify right side
    13,802.68x = 143,145,139.62
  5. Step 5: Solve for x
    x = 143,145,139.62/13,802.68
  6. Step 6: Final answer
    x = 10,370.82

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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.