Home / 20,851.70-31,204.65-14,582.30

Finding the Fourth Proportional to 20,851.70, 31,204.65 and 14,582.30

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Solution

The fourth proportional to 20,851.70, 31,204.65 and 14,582.30 is: 21,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.70 : 31,204.65 = 14,582.30 : x
  2. Step 2: Convert to fraction form
    20,851.70/31,204.65 = 14,582.30/x
  3. Step 3: Cross multiply
    20,851.70x = 31,204.65 × 14,582.30
  4. Step 4: Simplify right side
    20,851.70x = 455,035,567.70
  5. Step 5: Solve for x
    x = 455,035,567.70/20,851.70
  6. Step 6: Final answer
    x = 21,822.47

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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.