Home / 25,666.11-35,439.30-19,688.31

Finding the Fourth Proportional to 25,666.11, 35,439.30 and 19,688.31

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Solution

The fourth proportional to 25,666.11, 35,439.30 and 19,688.31 is: 27,185.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,666.11 : 35,439.30 = 19,688.31 : x
  2. Step 2: Convert to fraction form
    25,666.11/35,439.30 = 19,688.31/x
  3. Step 3: Cross multiply
    25,666.11x = 35,439.30 × 19,688.31
  4. Step 4: Simplify right side
    25,666.11x = 697,739,924.58
  5. Step 5: Solve for x
    x = 697,739,924.58/25,666.11
  6. Step 6: Final answer
    x = 27,185.26

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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.