Home / 30,564.36-42,187.64-19,808.87

Finding the Fourth Proportional to 30,564.36, 42,187.64 and 19,808.87

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Solution

The fourth proportional to 30,564.36, 42,187.64 and 19,808.87 is: 27,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,564.36 : 42,187.64 = 19,808.87 : x
  2. Step 2: Convert to fraction form
    30,564.36/42,187.64 = 19,808.87/x
  3. Step 3: Cross multiply
    30,564.36x = 42,187.64 × 19,808.87
  4. Step 4: Simplify right side
    30,564.36x = 835,689,166.38
  5. Step 5: Solve for x
    x = 835,689,166.38/30,564.36
  6. Step 6: Final answer
    x = 27,341.95

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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.