Home / 18,946.77-28,432.88-11,931.63

Finding the Fourth Proportional to 18,946.77, 28,432.88 and 11,931.63

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Solution

The fourth proportional to 18,946.77, 28,432.88 and 11,931.63 is: 17,905.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.77 : 28,432.88 = 11,931.63 : x
  2. Step 2: Convert to fraction form
    18,946.77/28,432.88 = 11,931.63/x
  3. Step 3: Cross multiply
    18,946.77x = 28,432.88 × 11,931.63
  4. Step 4: Simplify right side
    18,946.77x = 339,250,544.34
  5. Step 5: Solve for x
    x = 339,250,544.34/18,946.77
  6. Step 6: Final answer
    x = 17,905.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.