Home / 19,811.53-27,340.12-10,858.83

Finding the Fourth Proportional to 19,811.53, 27,340.12 and 10,858.83

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Solution

The fourth proportional to 19,811.53, 27,340.12 and 10,858.83 is: 14,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.53 : 27,340.12 = 10,858.83 : x
  2. Step 2: Convert to fraction form
    19,811.53/27,340.12 = 10,858.83/x
  3. Step 3: Cross multiply
    19,811.53x = 27,340.12 × 10,858.83
  4. Step 4: Simplify right side
    19,811.53x = 296,881,715.26
  5. Step 5: Solve for x
    x = 296,881,715.26/19,811.53
  6. Step 6: Final answer
    x = 14,985.30

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Double scale
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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.