Home / 28,070.73-42,128.10-19,582.02

Finding the Fourth Proportional to 28,070.73, 42,128.10 and 19,582.02

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Solution

The fourth proportional to 28,070.73, 42,128.10 and 19,582.02 is: 29,388.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.73 : 42,128.10 = 19,582.02 : x
  2. Step 2: Convert to fraction form
    28,070.73/42,128.10 = 19,582.02/x
  3. Step 3: Cross multiply
    28,070.73x = 42,128.10 × 19,582.02
  4. Step 4: Simplify right side
    28,070.73x = 824,953,454.74
  5. Step 5: Solve for x
    x = 824,953,454.74/28,070.73
  6. Step 6: Final answer
    x = 29,388.38

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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.