Home / 19,953.90-29,985.66-18,653.70

Finding the Fourth Proportional to 19,953.90, 29,985.66 and 18,653.70

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Solution

The fourth proportional to 19,953.90, 29,985.66 and 18,653.70 is: 28,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.90 : 29,985.66 = 18,653.70 : x
  2. Step 2: Convert to fraction form
    19,953.90/29,985.66 = 18,653.70/x
  3. Step 3: Cross multiply
    19,953.90x = 29,985.66 × 18,653.70
  4. Step 4: Simplify right side
    19,953.90x = 559,343,505.94
  5. Step 5: Solve for x
    x = 559,343,505.94/19,953.90
  6. Step 6: Final answer
    x = 28,031.79

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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.