Home / 42,845.99-64,278.36-12,858.98

Finding the Fourth Proportional to 42,845.99, 64,278.36 and 12,858.98

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Solution

The fourth proportional to 42,845.99, 64,278.36 and 12,858.98 is: 19,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,845.99 : 64,278.36 = 12,858.98 : x
  2. Step 2: Convert to fraction form
    42,845.99/64,278.36 = 12,858.98/x
  3. Step 3: Cross multiply
    42,845.99x = 64,278.36 × 12,858.98
  4. Step 4: Simplify right side
    42,845.99x = 826,553,824.28
  5. Step 5: Solve for x
    x = 826,553,824.28/42,845.99
  6. Step 6: Final answer
    x = 19,291.28

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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.