Home / 15,017.28-20,724.64-9,051.36

Finding the Fourth Proportional to 15,017.28, 20,724.64 and 9,051.36

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Solution

The fourth proportional to 15,017.28, 20,724.64 and 9,051.36 is: 12,491.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.28 : 20,724.64 = 9,051.36 : x
  2. Step 2: Convert to fraction form
    15,017.28/20,724.64 = 9,051.36/x
  3. Step 3: Cross multiply
    15,017.28x = 20,724.64 × 9,051.36
  4. Step 4: Simplify right side
    15,017.28x = 187,586,177.51
  5. Step 5: Solve for x
    x = 187,586,177.51/15,017.28
  6. Step 6: Final answer
    x = 12,491.36

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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.