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Finding the Fourth Proportional to 19,070.68, 28,602.76 and 5,219.68

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Solution

The fourth proportional to 19,070.68, 28,602.76 and 5,219.68 is: 7,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,070.68 : 28,602.76 = 5,219.68 : x
  2. Step 2: Convert to fraction form
    19,070.68/28,602.76 = 5,219.68/x
  3. Step 3: Cross multiply
    19,070.68x = 28,602.76 × 5,219.68
  4. Step 4: Simplify right side
    19,070.68x = 149,297,254.32
  5. Step 5: Solve for x
    x = 149,297,254.32/19,070.68
  6. Step 6: Final answer
    x = 7,828.63

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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.