Home / 15,333.36-21,155.40-8,618.28

Finding the Fourth Proportional to 15,333.36, 21,155.40 and 8,618.28

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Solution

The fourth proportional to 15,333.36, 21,155.40 and 8,618.28 is: 11,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.36 : 21,155.40 = 8,618.28 : x
  2. Step 2: Convert to fraction form
    15,333.36/21,155.40 = 8,618.28/x
  3. Step 3: Cross multiply
    15,333.36x = 21,155.40 × 8,618.28
  4. Step 4: Simplify right side
    15,333.36x = 182,323,160.71
  5. Step 5: Solve for x
    x = 182,323,160.71/15,333.36
  6. Step 6: Final answer
    x = 11,890.62

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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.