Home / 14,762.56-20,355.60-10,721.20

Finding the Fourth Proportional to 14,762.56, 20,355.60 and 10,721.20

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Solution

The fourth proportional to 14,762.56, 20,355.60 and 10,721.20 is: 14,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,762.56 : 20,355.60 = 10,721.20 : x
  2. Step 2: Convert to fraction form
    14,762.56/20,355.60 = 10,721.20/x
  3. Step 3: Cross multiply
    14,762.56x = 20,355.60 × 10,721.20
  4. Step 4: Simplify right side
    14,762.56x = 218,236,458.72
  5. Step 5: Solve for x
    x = 218,236,458.72/14,762.56
  6. Step 6: Final answer
    x = 14,783.10

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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.