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Finding the Fourth Proportional to 21,935.65, 32,903.73 and 6,139.74

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Solution

The fourth proportional to 21,935.65, 32,903.73 and 6,139.74 is: 9,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.65 : 32,903.73 = 6,139.74 : x
  2. Step 2: Convert to fraction form
    21,935.65/32,903.73 = 6,139.74/x
  3. Step 3: Cross multiply
    21,935.65x = 32,903.73 × 6,139.74
  4. Step 4: Simplify right side
    21,935.65x = 202,020,316.53
  5. Step 5: Solve for x
    x = 202,020,316.53/21,935.65
  6. Step 6: Final answer
    x = 9,209.68

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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.