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Finding the Fourth Proportional to 15,182.02, 20,953.90 and 9,811.11

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Solution

The fourth proportional to 15,182.02, 20,953.90 and 9,811.11 is: 13,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,182.02 : 20,953.90 = 9,811.11 : x
  2. Step 2: Convert to fraction form
    15,182.02/20,953.90 = 9,811.11/x
  3. Step 3: Cross multiply
    15,182.02x = 20,953.90 × 9,811.11
  4. Step 4: Simplify right side
    15,182.02x = 205,581,017.83
  5. Step 5: Solve for x
    x = 205,581,017.83/15,182.02
  6. Step 6: Final answer
    x = 13,541.08

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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.