Home / 20,569.98-30,848.56-7,420.63

Finding the Fourth Proportional to 20,569.98, 30,848.56 and 7,420.63

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Solution

The fourth proportional to 20,569.98, 30,848.56 and 7,420.63 is: 11,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.98 : 30,848.56 = 7,420.63 : x
  2. Step 2: Convert to fraction form
    20,569.98/30,848.56 = 7,420.63/x
  3. Step 3: Cross multiply
    20,569.98x = 30,848.56 × 7,420.63
  4. Step 4: Simplify right side
    20,569.98x = 228,915,749.79
  5. Step 5: Solve for x
    x = 228,915,749.79/20,569.98
  6. Step 6: Final answer
    x = 11,128.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.