Home / 11,285.64-15,581.88-7,038.36

Finding the Fourth Proportional to 11,285.64, 15,581.88 and 7,038.36

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Solution

The fourth proportional to 11,285.64, 15,581.88 and 7,038.36 is: 9,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,285.64 : 15,581.88 = 7,038.36 : x
  2. Step 2: Convert to fraction form
    11,285.64/15,581.88 = 7,038.36/x
  3. Step 3: Cross multiply
    11,285.64x = 15,581.88 × 7,038.36
  4. Step 4: Simplify right side
    11,285.64x = 109,670,880.92
  5. Step 5: Solve for x
    x = 109,670,880.92/11,285.64
  6. Step 6: Final answer
    x = 9,717.74

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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.