Home / 28,071.28-42,070.35-11,411.87

Finding the Fourth Proportional to 28,071.28, 42,070.35 and 11,411.87

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Solution

The fourth proportional to 28,071.28, 42,070.35 and 11,411.87 is: 17,102.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.28 : 42,070.35 = 11,411.87 : x
  2. Step 2: Convert to fraction form
    28,071.28/42,070.35 = 11,411.87/x
  3. Step 3: Cross multiply
    28,071.28x = 42,070.35 × 11,411.87
  4. Step 4: Simplify right side
    28,071.28x = 480,101,365.05
  5. Step 5: Solve for x
    x = 480,101,365.05/28,071.28
  6. Step 6: Final answer
    x = 17,102.94

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1.5x scale

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.