Home / 19,782.04-27,276.06-15,790.36

Finding the Fourth Proportional to 19,782.04, 27,276.06 and 15,790.36

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Solution

The fourth proportional to 19,782.04, 27,276.06 and 15,790.36 is: 21,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.04 : 27,276.06 = 15,790.36 : x
  2. Step 2: Convert to fraction form
    19,782.04/27,276.06 = 15,790.36/x
  3. Step 3: Cross multiply
    19,782.04x = 27,276.06 × 15,790.36
  4. Step 4: Simplify right side
    19,782.04x = 430,698,806.78
  5. Step 5: Solve for x
    x = 430,698,806.78/19,782.04
  6. Step 6: Final answer
    x = 21,772.21

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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.