Home / 13,865.80-19,134.80-7,897.48

Finding the Fourth Proportional to 13,865.80, 19,134.80 and 7,897.48

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Solution

The fourth proportional to 13,865.80, 19,134.80 and 7,897.48 is: 10,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.80 : 19,134.80 = 7,897.48 : x
  2. Step 2: Convert to fraction form
    13,865.80/19,134.80 = 7,897.48/x
  3. Step 3: Cross multiply
    13,865.80x = 19,134.80 × 7,897.48
  4. Step 4: Simplify right side
    13,865.80x = 151,116,700.30
  5. Step 5: Solve for x
    x = 151,116,700.30/13,865.80
  6. Step 6: Final answer
    x = 10,898.52

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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.