Home / 15,309.02-21,120.99-10,006.89

Finding the Fourth Proportional to 15,309.02, 21,120.99 and 10,006.89

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Solution

The fourth proportional to 15,309.02, 21,120.99 and 10,006.89 is: 13,805.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.02 : 21,120.99 = 10,006.89 : x
  2. Step 2: Convert to fraction form
    15,309.02/21,120.99 = 10,006.89/x
  3. Step 3: Cross multiply
    15,309.02x = 21,120.99 × 10,006.89
  4. Step 4: Simplify right side
    15,309.02x = 211,355,423.62
  5. Step 5: Solve for x
    x = 211,355,423.62/15,309.02
  6. Step 6: Final answer
    x = 13,805.95

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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.