Home / 15,702.08-21,670.07-8,989.81

Finding the Fourth Proportional to 15,702.08, 21,670.07 and 8,989.81

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Solution

The fourth proportional to 15,702.08, 21,670.07 and 8,989.81 is: 12,406.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.08 : 21,670.07 = 8,989.81 : x
  2. Step 2: Convert to fraction form
    15,702.08/21,670.07 = 8,989.81/x
  3. Step 3: Cross multiply
    15,702.08x = 21,670.07 × 8,989.81
  4. Step 4: Simplify right side
    15,702.08x = 194,809,811.99
  5. Step 5: Solve for x
    x = 194,809,811.99/15,702.08
  6. Step 6: Final answer
    x = 12,406.62

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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.