Home / 20,975.63-28,946.37-11,543.99

Finding the Fourth Proportional to 20,975.63, 28,946.37 and 11,543.99

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Solution

The fourth proportional to 20,975.63, 28,946.37 and 11,543.99 is: 15,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.63 : 28,946.37 = 11,543.99 : x
  2. Step 2: Convert to fraction form
    20,975.63/28,946.37 = 11,543.99/x
  3. Step 3: Cross multiply
    20,975.63x = 28,946.37 × 11,543.99
  4. Step 4: Simplify right side
    20,975.63x = 334,156,461.08
  5. Step 5: Solve for x
    x = 334,156,461.08/20,975.63
  6. Step 6: Final answer
    x = 15,930.70

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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.