Home / 12,985.24-19,477.86-8,371.48

Finding the Fourth Proportional to 12,985.24, 19,477.86 and 8,371.48

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Solution

The fourth proportional to 12,985.24, 19,477.86 and 8,371.48 is: 12,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.24 : 19,477.86 = 8,371.48 : x
  2. Step 2: Convert to fraction form
    12,985.24/19,477.86 = 8,371.48/x
  3. Step 3: Cross multiply
    12,985.24x = 19,477.86 × 8,371.48
  4. Step 4: Simplify right side
    12,985.24x = 163,058,515.43
  5. Step 5: Solve for x
    x = 163,058,515.43/12,985.24
  6. Step 6: Final answer
    x = 12,557.22

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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.