Home / 15,285.99-21,098.41-9,320.94

Finding the Fourth Proportional to 15,285.99, 21,098.41 and 9,320.94

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Solution

The fourth proportional to 15,285.99, 21,098.41 and 9,320.94 is: 12,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.99 : 21,098.41 = 9,320.94 : x
  2. Step 2: Convert to fraction form
    15,285.99/21,098.41 = 9,320.94/x
  3. Step 3: Cross multiply
    15,285.99x = 21,098.41 × 9,320.94
  4. Step 4: Simplify right side
    15,285.99x = 196,657,013.71
  5. Step 5: Solve for x
    x = 196,657,013.71/15,285.99
  6. Step 6: Final answer
    x = 12,865.18

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Similar ratio
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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.