Home / 15,749.80-21,737.70-9,783.88

Finding the Fourth Proportional to 15,749.80, 21,737.70 and 9,783.88

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Solution

The fourth proportional to 15,749.80, 21,737.70 and 9,783.88 is: 13,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.80 : 21,737.70 = 9,783.88 : x
  2. Step 2: Convert to fraction form
    15,749.80/21,737.70 = 9,783.88/x
  3. Step 3: Cross multiply
    15,749.80x = 21,737.70 × 9,783.88
  4. Step 4: Simplify right side
    15,749.80x = 212,679,048.28
  5. Step 5: Solve for x
    x = 212,679,048.28/15,749.80
  6. Step 6: Final answer
    x = 13,503.60

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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.