Home / 21,010.46-31,521.80-6,219.76

Finding the Fourth Proportional to 21,010.46, 31,521.80 and 6,219.76

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Solution

The fourth proportional to 21,010.46, 31,521.80 and 6,219.76 is: 9,331.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.46 : 31,521.80 = 6,219.76 : x
  2. Step 2: Convert to fraction form
    21,010.46/31,521.80 = 6,219.76/x
  3. Step 3: Cross multiply
    21,010.46x = 31,521.80 × 6,219.76
  4. Step 4: Simplify right side
    21,010.46x = 196,058,030.77
  5. Step 5: Solve for x
    x = 196,058,030.77/21,010.46
  6. Step 6: Final answer
    x = 9,331.45

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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.