Home / 20,587.21-30,857.47-9,470.95

Finding the Fourth Proportional to 20,587.21, 30,857.47 and 9,470.95

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Solution

The fourth proportional to 20,587.21, 30,857.47 and 9,470.95 is: 14,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.21 : 30,857.47 = 9,470.95 : x
  2. Step 2: Convert to fraction form
    20,587.21/30,857.47 = 9,470.95/x
  3. Step 3: Cross multiply
    20,587.21x = 30,857.47 × 9,470.95
  4. Step 4: Simplify right side
    20,587.21x = 292,249,555.50
  5. Step 5: Solve for x
    x = 292,249,555.50/20,587.21
  6. Step 6: Final answer
    x = 14,195.69

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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.