Home / 13,421.95-18,522.30-7,832.95

Finding the Fourth Proportional to 13,421.95, 18,522.30 and 7,832.95

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Solution

The fourth proportional to 13,421.95, 18,522.30 and 7,832.95 is: 10,809.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.95 : 18,522.30 = 7,832.95 : x
  2. Step 2: Convert to fraction form
    13,421.95/18,522.30 = 7,832.95/x
  3. Step 3: Cross multiply
    13,421.95x = 18,522.30 × 7,832.95
  4. Step 4: Simplify right side
    13,421.95x = 145,084,270.95
  5. Step 5: Solve for x
    x = 145,084,270.95/13,421.95
  6. Step 6: Final answer
    x = 10,809.48

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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.