Home / 13,898.80-19,180.50-7,931.26

Finding the Fourth Proportional to 13,898.80, 19,180.50 and 7,931.26

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Solution

The fourth proportional to 13,898.80, 19,180.50 and 7,931.26 is: 10,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.80 : 19,180.50 = 7,931.26 : x
  2. Step 2: Convert to fraction form
    13,898.80/19,180.50 = 7,931.26/x
  3. Step 3: Cross multiply
    13,898.80x = 19,180.50 × 7,931.26
  4. Step 4: Simplify right side
    13,898.80x = 152,125,532.43
  5. Step 5: Solve for x
    x = 152,125,532.43/13,898.80
  6. Step 6: Final answer
    x = 10,945.23

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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.