Home / 13,355.29-18,430.14-7,387.08

Finding the Fourth Proportional to 13,355.29, 18,430.14 and 7,387.08

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Solution

The fourth proportional to 13,355.29, 18,430.14 and 7,387.08 is: 10,194.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.29 : 18,430.14 = 7,387.08 : x
  2. Step 2: Convert to fraction form
    13,355.29/18,430.14 = 7,387.08/x
  3. Step 3: Cross multiply
    13,355.29x = 18,430.14 × 7,387.08
  4. Step 4: Simplify right side
    13,355.29x = 136,144,918.59
  5. Step 5: Solve for x
    x = 136,144,918.59/13,355.29
  6. Step 6: Final answer
    x = 10,194.08

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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.