Home / 21,554.31-32,341.20-9,870.87

Finding the Fourth Proportional to 21,554.31, 32,341.20 and 9,870.87

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Solution

The fourth proportional to 21,554.31, 32,341.20 and 9,870.87 is: 14,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.31 : 32,341.20 = 9,870.87 : x
  2. Step 2: Convert to fraction form
    21,554.31/32,341.20 = 9,870.87/x
  3. Step 3: Cross multiply
    21,554.31x = 32,341.20 × 9,870.87
  4. Step 4: Simplify right side
    21,554.31x = 319,235,780.84
  5. Step 5: Solve for x
    x = 319,235,780.84/21,554.31
  6. Step 6: Final answer
    x = 14,810.76

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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.