Home / 21,058.28-31,590.54-7,013.72

Finding the Fourth Proportional to 21,058.28, 31,590.54 and 7,013.72

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Solution

The fourth proportional to 21,058.28, 31,590.54 and 7,013.72 is: 10,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.28 : 31,590.54 = 7,013.72 : x
  2. Step 2: Convert to fraction form
    21,058.28/31,590.54 = 7,013.72/x
  3. Step 3: Cross multiply
    21,058.28x = 31,590.54 × 7,013.72
  4. Step 4: Simplify right side
    21,058.28x = 221,567,202.21
  5. Step 5: Solve for x
    x = 221,567,202.21/21,058.28
  6. Step 6: Final answer
    x = 10,521.62

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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.