Home / 30,644.78-42,301.73-19,312.06

Finding the Fourth Proportional to 30,644.78, 42,301.73 and 19,312.06

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Solution

The fourth proportional to 30,644.78, 42,301.73 and 19,312.06 is: 26,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.78 : 42,301.73 = 19,312.06 : x
  2. Step 2: Convert to fraction form
    30,644.78/42,301.73 = 19,312.06/x
  3. Step 3: Cross multiply
    30,644.78x = 42,301.73 × 19,312.06
  4. Step 4: Simplify right side
    30,644.78x = 816,933,483.06
  5. Step 5: Solve for x
    x = 816,933,483.06/30,644.78
  6. Step 6: Final answer
    x = 26,658.16

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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.