Home / 42,864.63-64,294.47-12,878.22

Finding the Fourth Proportional to 42,864.63, 64,294.47 and 12,878.22

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Solution

The fourth proportional to 42,864.63, 64,294.47 and 12,878.22 is: 19,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,864.63 : 64,294.47 = 12,878.22 : x
  2. Step 2: Convert to fraction form
    42,864.63/64,294.47 = 12,878.22/x
  3. Step 3: Cross multiply
    42,864.63x = 64,294.47 × 12,878.22
  4. Step 4: Simplify right side
    42,864.63x = 827,998,329.44
  5. Step 5: Solve for x
    x = 827,998,329.44/42,864.63
  6. Step 6: Final answer
    x = 19,316.59

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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.