Home / 28,101.52-38,762.40-18,019.36

Finding the Fourth Proportional to 28,101.52, 38,762.40 and 18,019.36

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Solution

The fourth proportional to 28,101.52, 38,762.40 and 18,019.36 is: 24,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.52 : 38,762.40 = 18,019.36 : x
  2. Step 2: Convert to fraction form
    28,101.52/38,762.40 = 18,019.36/x
  3. Step 3: Cross multiply
    28,101.52x = 38,762.40 × 18,019.36
  4. Step 4: Simplify right side
    28,101.52x = 698,473,640.06
  5. Step 5: Solve for x
    x = 698,473,640.06/28,101.52
  6. Step 6: Final answer
    x = 24,855.37

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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.