Home / 20,545.32-30,669.35-18,054.20

Finding the Fourth Proportional to 20,545.32, 30,669.35 and 18,054.20

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Solution

The fourth proportional to 20,545.32, 30,669.35 and 18,054.20 is: 26,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.32 : 30,669.35 = 18,054.20 : x
  2. Step 2: Convert to fraction form
    20,545.32/30,669.35 = 18,054.20/x
  3. Step 3: Cross multiply
    20,545.32x = 30,669.35 × 18,054.20
  4. Step 4: Simplify right side
    20,545.32x = 553,710,470.56
  5. Step 5: Solve for x
    x = 553,710,470.56/20,545.32
  6. Step 6: Final answer
    x = 26,950.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.