Home / 15,285.48-21,097.72-9,320.44

Finding the Fourth Proportional to 15,285.48, 21,097.72 and 9,320.44

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Solution

The fourth proportional to 15,285.48, 21,097.72 and 9,320.44 is: 12,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.48 : 21,097.72 = 9,320.44 : x
  2. Step 2: Convert to fraction form
    15,285.48/21,097.72 = 9,320.44/x
  3. Step 3: Cross multiply
    15,285.48x = 21,097.72 × 9,320.44
  4. Step 4: Simplify right side
    15,285.48x = 196,640,033.40
  5. Step 5: Solve for x
    x = 196,640,033.40/15,285.48
  6. Step 6: Final answer
    x = 12,864.50

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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.