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Finding the Fourth Proportional to 15,133.71, 20,870.15 and 9,083.01

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Solution

The fourth proportional to 15,133.71, 20,870.15 and 9,083.01 is: 12,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.71 : 20,870.15 = 9,083.01 : x
  2. Step 2: Convert to fraction form
    15,133.71/20,870.15 = 9,083.01/x
  3. Step 3: Cross multiply
    15,133.71x = 20,870.15 × 9,083.01
  4. Step 4: Simplify right side
    15,133.71x = 189,563,735.74
  5. Step 5: Solve for x
    x = 189,563,735.74/15,133.71
  6. Step 6: Final answer
    x = 12,525.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.