Home / 15,211.10-21,005.73-14,382.77

Finding the Fourth Proportional to 15,211.10, 21,005.73 and 14,382.77

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Solution

The fourth proportional to 15,211.10, 21,005.73 and 14,382.77 is: 19,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.10 : 21,005.73 = 14,382.77 : x
  2. Step 2: Convert to fraction form
    15,211.10/21,005.73 = 14,382.77/x
  3. Step 3: Cross multiply
    15,211.10x = 21,005.73 × 14,382.77
  4. Step 4: Simplify right side
    15,211.10x = 302,120,478.24
  5. Step 5: Solve for x
    x = 302,120,478.24/15,211.10
  6. Step 6: Final answer
    x = 19,861.85

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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.