Home / 21,970.84-32,957.38-6,389.72

Finding the Fourth Proportional to 21,970.84, 32,957.38 and 6,389.72

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Solution

The fourth proportional to 21,970.84, 32,957.38 and 6,389.72 is: 9,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.84 : 32,957.38 = 6,389.72 : x
  2. Step 2: Convert to fraction form
    21,970.84/32,957.38 = 6,389.72/x
  3. Step 3: Cross multiply
    21,970.84x = 32,957.38 × 6,389.72
  4. Step 4: Simplify right side
    21,970.84x = 210,588,430.13
  5. Step 5: Solve for x
    x = 210,588,430.13/21,970.84
  6. Step 6: Final answer
    x = 9,584.91

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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.