Home / 28,274.07-42,418.13-19,970.29

Finding the Fourth Proportional to 28,274.07, 42,418.13 and 19,970.29

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Solution

The fourth proportional to 28,274.07, 42,418.13 and 19,970.29 is: 29,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.07 : 42,418.13 = 19,970.29 : x
  2. Step 2: Convert to fraction form
    28,274.07/42,418.13 = 19,970.29/x
  3. Step 3: Cross multiply
    28,274.07x = 42,418.13 × 19,970.29
  4. Step 4: Simplify right side
    28,274.07x = 847,102,357.36
  5. Step 5: Solve for x
    x = 847,102,357.36/28,274.07
  6. Step 6: Final answer
    x = 29,960.40

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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.