Home / 15,060.36-20,783.28-9,090.87

Finding the Fourth Proportional to 15,060.36, 20,783.28 and 9,090.87

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Solution

The fourth proportional to 15,060.36, 20,783.28 and 9,090.87 is: 12,545.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.36 : 20,783.28 = 9,090.87 : x
  2. Step 2: Convert to fraction form
    15,060.36/20,783.28 = 9,090.87/x
  3. Step 3: Cross multiply
    15,060.36x = 20,783.28 × 9,090.87
  4. Step 4: Simplify right side
    15,060.36x = 188,938,052.81
  5. Step 5: Solve for x
    x = 188,938,052.81/15,060.36
  6. Step 6: Final answer
    x = 12,545.38

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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.