Home / 12,970.36-17,900.68-8,495.20

Finding the Fourth Proportional to 12,970.36, 17,900.68 and 8,495.20

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Solution

The fourth proportional to 12,970.36, 17,900.68 and 8,495.20 is: 11,724.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,970.36 : 17,900.68 = 8,495.20 : x
  2. Step 2: Convert to fraction form
    12,970.36/17,900.68 = 8,495.20/x
  3. Step 3: Cross multiply
    12,970.36x = 17,900.68 × 8,495.20
  4. Step 4: Simplify right side
    12,970.36x = 152,069,856.74
  5. Step 5: Solve for x
    x = 152,069,856.74/12,970.36
  6. Step 6: Final answer
    x = 11,724.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.