Home / 15,285.36-21,097.54-9,320.32

Finding the Fourth Proportional to 15,285.36, 21,097.54 and 9,320.32

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Solution

The fourth proportional to 15,285.36, 21,097.54 and 9,320.32 is: 12,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.36 : 21,097.54 = 9,320.32 : x
  2. Step 2: Convert to fraction form
    15,285.36/21,097.54 = 9,320.32/x
  3. Step 3: Cross multiply
    15,285.36x = 21,097.54 × 9,320.32
  4. Step 4: Simplify right side
    15,285.36x = 196,635,824.01
  5. Step 5: Solve for x
    x = 196,635,824.01/15,285.36
  6. Step 6: Final answer
    x = 12,864.32

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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.