Home / 28,211.10-38,935.47-16,272.11

Finding the Fourth Proportional to 28,211.10, 38,935.47 and 16,272.11

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Solution

The fourth proportional to 28,211.10, 38,935.47 and 16,272.11 is: 22,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.10 : 38,935.47 = 16,272.11 : x
  2. Step 2: Convert to fraction form
    28,211.10/38,935.47 = 16,272.11/x
  3. Step 3: Cross multiply
    28,211.10x = 38,935.47 × 16,272.11
  4. Step 4: Simplify right side
    28,211.10x = 633,562,056.06
  5. Step 5: Solve for x
    x = 633,562,056.06/28,211.10
  6. Step 6: Final answer
    x = 22,457.90

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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.