Home / 28,071.12-42,070.32-11,411.67

Finding the Fourth Proportional to 28,071.12, 42,070.32 and 11,411.67

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Solution

The fourth proportional to 28,071.12, 42,070.32 and 11,411.67 is: 17,102.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.12 : 42,070.32 = 11,411.67 : x
  2. Step 2: Convert to fraction form
    28,071.12/42,070.32 = 11,411.67/x
  3. Step 3: Cross multiply
    28,071.12x = 42,070.32 × 11,411.67
  4. Step 4: Simplify right side
    28,071.12x = 480,092,608.63
  5. Step 5: Solve for x
    x = 480,092,608.63/28,071.12
  6. Step 6: Final answer
    x = 17,102.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.