Home / 42,358.23-63,540.36-12,778.32

Finding the Fourth Proportional to 42,358.23, 63,540.36 and 12,778.32

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Solution

The fourth proportional to 42,358.23, 63,540.36 and 12,778.32 is: 19,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,358.23 : 63,540.36 = 12,778.32 : x
  2. Step 2: Convert to fraction form
    42,358.23/63,540.36 = 12,778.32/x
  3. Step 3: Cross multiply
    42,358.23x = 63,540.36 × 12,778.32
  4. Step 4: Simplify right side
    42,358.23x = 811,939,053.00
  5. Step 5: Solve for x
    x = 811,939,053.00/42,358.23
  6. Step 6: Final answer
    x = 19,168.39

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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.