Home / 31,582.98-47,415.72-21,120.12

Finding the Fourth Proportional to 31,582.98, 47,415.72 and 21,120.12

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Solution

The fourth proportional to 31,582.98, 47,415.72 and 21,120.12 is: 31,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,582.98 : 47,415.72 = 21,120.12 : x
  2. Step 2: Convert to fraction form
    31,582.98/47,415.72 = 21,120.12/x
  3. Step 3: Cross multiply
    31,582.98x = 47,415.72 × 21,120.12
  4. Step 4: Simplify right side
    31,582.98x = 1,001,425,696.29
  5. Step 5: Solve for x
    x = 1,001,425,696.29/31,582.98
  6. Step 6: Final answer
    x = 31,707.76

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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.