Home / 19,830.81-29,748.96-6,686.94

Finding the Fourth Proportional to 19,830.81, 29,748.96 and 6,686.94

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Solution

The fourth proportional to 19,830.81, 29,748.96 and 6,686.94 is: 10,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.81 : 29,748.96 = 6,686.94 : x
  2. Step 2: Convert to fraction form
    19,830.81/29,748.96 = 6,686.94/x
  3. Step 3: Cross multiply
    19,830.81x = 29,748.96 × 6,686.94
  4. Step 4: Simplify right side
    19,830.81x = 198,929,510.58
  5. Step 5: Solve for x
    x = 198,929,510.58/19,830.81
  6. Step 6: Final answer
    x = 10,031.34

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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.