Home / 19,394.95-26,776.19-13,030.78

Finding the Fourth Proportional to 19,394.95, 26,776.19 and 13,030.78

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Solution

The fourth proportional to 19,394.95, 26,776.19 and 13,030.78 is: 17,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,394.95 : 26,776.19 = 13,030.78 : x
  2. Step 2: Convert to fraction form
    19,394.95/26,776.19 = 13,030.78/x
  3. Step 3: Cross multiply
    19,394.95x = 26,776.19 × 13,030.78
  4. Step 4: Simplify right side
    19,394.95x = 348,914,606.76
  5. Step 5: Solve for x
    x = 348,914,606.76/19,394.95
  6. Step 6: Final answer
    x = 17,989.97

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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.