Home / 13,811.40-19,062.18-7,841.88

Finding the Fourth Proportional to 13,811.40, 19,062.18 and 7,841.88

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Solution

The fourth proportional to 13,811.40, 19,062.18 and 7,841.88 is: 10,823.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.40 : 19,062.18 = 7,841.88 : x
  2. Step 2: Convert to fraction form
    13,811.40/19,062.18 = 7,841.88/x
  3. Step 3: Cross multiply
    13,811.40x = 19,062.18 × 7,841.88
  4. Step 4: Simplify right side
    13,811.40x = 149,483,328.10
  5. Step 5: Solve for x
    x = 149,483,328.10/13,811.40
  6. Step 6: Final answer
    x = 10,823.18

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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.