Home / 15,288.90-21,099.06-8,574.27

Finding the Fourth Proportional to 15,288.90, 21,099.06 and 8,574.27

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Solution

The fourth proportional to 15,288.90, 21,099.06 and 8,574.27 is: 11,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.90 : 21,099.06 = 8,574.27 : x
  2. Step 2: Convert to fraction form
    15,288.90/21,099.06 = 8,574.27/x
  3. Step 3: Cross multiply
    15,288.90x = 21,099.06 × 8,574.27
  4. Step 4: Simplify right side
    15,288.90x = 180,909,037.19
  5. Step 5: Solve for x
    x = 180,909,037.19/15,288.90
  6. Step 6: Final answer
    x = 11,832.70

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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.