Home / 14,782.80-20,386.68-11,015.28

Finding the Fourth Proportional to 14,782.80, 20,386.68 and 11,015.28

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Solution

The fourth proportional to 14,782.80, 20,386.68 and 11,015.28 is: 15,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,782.80 : 20,386.68 = 11,015.28 : x
  2. Step 2: Convert to fraction form
    14,782.80/20,386.68 = 11,015.28/x
  3. Step 3: Cross multiply
    14,782.80x = 20,386.68 × 11,015.28
  4. Step 4: Simplify right side
    14,782.80x = 224,564,988.47
  5. Step 5: Solve for x
    x = 224,564,988.47/14,782.80
  6. Step 6: Final answer
    x = 15,190.96

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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.