Home / 15,476.89-21,357.90-8,762.34

Finding the Fourth Proportional to 15,476.89, 21,357.90 and 8,762.34

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Solution

The fourth proportional to 15,476.89, 21,357.90 and 8,762.34 is: 12,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.89 : 21,357.90 = 8,762.34 : x
  2. Step 2: Convert to fraction form
    15,476.89/21,357.90 = 8,762.34/x
  3. Step 3: Cross multiply
    15,476.89x = 21,357.90 × 8,762.34
  4. Step 4: Simplify right side
    15,476.89x = 187,145,137.67
  5. Step 5: Solve for x
    x = 187,145,137.67/15,476.89
  6. Step 6: Final answer
    x = 12,091.91

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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.