Home / 13,355.17-18,428.54-7,386.03

Finding the Fourth Proportional to 13,355.17, 18,428.54 and 7,386.03

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Solution

The fourth proportional to 13,355.17, 18,428.54 and 7,386.03 is: 10,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.17 : 18,428.54 = 7,386.03 : x
  2. Step 2: Convert to fraction form
    13,355.17/18,428.54 = 7,386.03/x
  3. Step 3: Cross multiply
    13,355.17x = 18,428.54 × 7,386.03
  4. Step 4: Simplify right side
    13,355.17x = 136,113,749.30
  5. Step 5: Solve for x
    x = 136,113,749.30/13,355.17
  6. Step 6: Final answer
    x = 10,191.84

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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.