Home / 15,914.50-21,946.91-12,130.99

Finding the Fourth Proportional to 15,914.50, 21,946.91 and 12,130.99

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Solution

The fourth proportional to 15,914.50, 21,946.91 and 12,130.99 is: 16,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,914.50 : 21,946.91 = 12,130.99 : x
  2. Step 2: Convert to fraction form
    15,914.50/21,946.91 = 12,130.99/x
  3. Step 3: Cross multiply
    15,914.50x = 21,946.91 × 12,130.99
  4. Step 4: Simplify right side
    15,914.50x = 266,237,630.22
  5. Step 5: Solve for x
    x = 266,237,630.22/15,914.50
  6. Step 6: Final answer
    x = 16,729.25

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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.