Home / 51,009.18-76,519.60-13,570.78

Finding the Fourth Proportional to 51,009.18, 76,519.60 and 13,570.78

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Solution

The fourth proportional to 51,009.18, 76,519.60 and 13,570.78 is: 20,357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,009.18 : 76,519.60 = 13,570.78 : x
  2. Step 2: Convert to fraction form
    51,009.18/76,519.60 = 13,570.78/x
  3. Step 3: Cross multiply
    51,009.18x = 76,519.60 × 13,570.78
  4. Step 4: Simplify right side
    51,009.18x = 1,038,430,623.36
  5. Step 5: Solve for x
    x = 1,038,430,623.36/51,009.18
  6. Step 6: Final answer
    x = 20,357.72

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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.