Home / 28,434.90-42,650.80-8,713.51

Finding the Fourth Proportional to 28,434.90, 42,650.80 and 8,713.51

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Solution

The fourth proportional to 28,434.90, 42,650.80 and 8,713.51 is: 13,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.90 : 42,650.80 = 8,713.51 : x
  2. Step 2: Convert to fraction form
    28,434.90/42,650.80 = 8,713.51/x
  3. Step 3: Cross multiply
    28,434.90x = 42,650.80 × 8,713.51
  4. Step 4: Simplify right side
    28,434.90x = 371,638,172.31
  5. Step 5: Solve for x
    x = 371,638,172.31/28,434.90
  6. Step 6: Final answer
    x = 13,069.79

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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.