Home / 15,479.99-21,371.24-10,190.18

Finding the Fourth Proportional to 15,479.99, 21,371.24 and 10,190.18

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Solution

The fourth proportional to 15,479.99, 21,371.24 and 10,190.18 is: 14,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,479.99 : 21,371.24 = 10,190.18 : x
  2. Step 2: Convert to fraction form
    15,479.99/21,371.24 = 10,190.18/x
  3. Step 3: Cross multiply
    15,479.99x = 21,371.24 × 10,190.18
  4. Step 4: Simplify right side
    15,479.99x = 217,776,810.85
  5. Step 5: Solve for x
    x = 217,776,810.85/15,479.99
  6. Step 6: Final answer
    x = 14,068.28

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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.