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Finding the Fourth Proportional to 13,465, 18,583.89 and 7,802.29

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Solution

The fourth proportional to 13,465, 18,583.89 and 7,802.29 is: 10,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465 : 18,583.89 = 7,802.29 : x
  2. Step 2: Convert to fraction form
    13,465/18,583.89 = 7,802.29/x
  3. Step 3: Cross multiply
    13,465x = 18,583.89 × 7,802.29
  4. Step 4: Simplify right side
    13,465x = 144,996,899.11
  5. Step 5: Solve for x
    x = 144,996,899.11/13,465
  6. Step 6: Final answer
    x = 10,768.43

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Double scale
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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.