Home / 31,545.99-43,533.38-18,118.11

Finding the Fourth Proportional to 31,545.99, 43,533.38 and 18,118.11

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Solution

The fourth proportional to 31,545.99, 43,533.38 and 18,118.11 is: 25,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,545.99 : 43,533.38 = 18,118.11 : x
  2. Step 2: Convert to fraction form
    31,545.99/43,533.38 = 18,118.11/x
  3. Step 3: Cross multiply
    31,545.99x = 43,533.38 × 18,118.11
  4. Step 4: Simplify right side
    31,545.99x = 788,742,776.06
  5. Step 5: Solve for x
    x = 788,742,776.06/31,545.99
  6. Step 6: Final answer
    x = 25,002.95

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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.