Home / 42,814.78-64,220.95-19,144.15

Finding the Fourth Proportional to 42,814.78, 64,220.95 and 19,144.15

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Solution

The fourth proportional to 42,814.78, 64,220.95 and 19,144.15 is: 28,715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,814.78 : 64,220.95 = 19,144.15 : x
  2. Step 2: Convert to fraction form
    42,814.78/64,220.95 = 19,144.15/x
  3. Step 3: Cross multiply
    42,814.78x = 64,220.95 × 19,144.15
  4. Step 4: Simplify right side
    42,814.78x = 1,229,455,363.32
  5. Step 5: Solve for x
    x = 1,229,455,363.32/42,814.78
  6. Step 6: Final answer
    x = 28,715.68

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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.