Home / 20,566.09-30,886.80-18,831.07

Finding the Fourth Proportional to 20,566.09, 30,886.80 and 18,831.07

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Solution

The fourth proportional to 20,566.09, 30,886.80 and 18,831.07 is: 28,281.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.09 : 30,886.80 = 18,831.07 : x
  2. Step 2: Convert to fraction form
    20,566.09/30,886.80 = 18,831.07/x
  3. Step 3: Cross multiply
    20,566.09x = 30,886.80 × 18,831.07
  4. Step 4: Simplify right side
    20,566.09x = 581,631,492.88
  5. Step 5: Solve for x
    x = 581,631,492.88/20,566.09
  6. Step 6: Final answer
    x = 28,281.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.