Home / 21,970.66-30,319.34-11,898.87

Finding the Fourth Proportional to 21,970.66, 30,319.34 and 11,898.87

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Solution

The fourth proportional to 21,970.66, 30,319.34 and 11,898.87 is: 16,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.66 : 30,319.34 = 11,898.87 : x
  2. Step 2: Convert to fraction form
    21,970.66/30,319.34 = 11,898.87/x
  3. Step 3: Cross multiply
    21,970.66x = 30,319.34 × 11,898.87
  4. Step 4: Simplify right side
    21,970.66x = 360,765,870.27
  5. Step 5: Solve for x
    x = 360,765,870.27/21,970.66
  6. Step 6: Final answer
    x = 16,420.35

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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.