Home / 51,021.40-70,409.14-28,665.40

Finding the Fourth Proportional to 51,021.40, 70,409.14 and 28,665.40

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Solution

The fourth proportional to 51,021.40, 70,409.14 and 28,665.40 is: 39,558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.40 : 70,409.14 = 28,665.40 : x
  2. Step 2: Convert to fraction form
    51,021.40/70,409.14 = 28,665.40/x
  3. Step 3: Cross multiply
    51,021.40x = 70,409.14 × 28,665.40
  4. Step 4: Simplify right side
    51,021.40x = 2,018,306,161.76
  5. Step 5: Solve for x
    x = 2,018,306,161.76/51,021.40
  6. Step 6: Final answer
    x = 39,558.03

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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.