Home / 18,783.48-25,920.40-10,285.45

Finding the Fourth Proportional to 18,783.48, 25,920.40 and 10,285.45

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Solution

The fourth proportional to 18,783.48, 25,920.40 and 10,285.45 is: 14,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.48 : 25,920.40 = 10,285.45 : x
  2. Step 2: Convert to fraction form
    18,783.48/25,920.40 = 10,285.45/x
  3. Step 3: Cross multiply
    18,783.48x = 25,920.40 × 10,285.45
  4. Step 4: Simplify right side
    18,783.48x = 266,602,797.15
  5. Step 5: Solve for x
    x = 266,602,797.15/18,783.48
  6. Step 6: Final answer
    x = 14,193.48

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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.