Home / 13,319.95-18,381.63-7,351.51

Finding the Fourth Proportional to 13,319.95, 18,381.63 and 7,351.51

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Solution

The fourth proportional to 13,319.95, 18,381.63 and 7,351.51 is: 10,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.95 : 18,381.63 = 7,351.51 : x
  2. Step 2: Convert to fraction form
    13,319.95/18,381.63 = 7,351.51/x
  3. Step 3: Cross multiply
    13,319.95x = 18,381.63 × 7,351.51
  4. Step 4: Simplify right side
    13,319.95x = 135,132,736.76
  5. Step 5: Solve for x
    x = 135,132,736.76/13,319.95
  6. Step 6: Final answer
    x = 10,145.14

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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.