Home / 28,430.83-42,611.65-20,113.24

Finding the Fourth Proportional to 28,430.83, 42,611.65 and 20,113.24

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Solution

The fourth proportional to 28,430.83, 42,611.65 and 20,113.24 is: 30,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.83 : 42,611.65 = 20,113.24 : x
  2. Step 2: Convert to fraction form
    28,430.83/42,611.65 = 20,113.24/x
  3. Step 3: Cross multiply
    28,430.83x = 42,611.65 × 20,113.24
  4. Step 4: Simplify right side
    28,430.83x = 857,058,343.25
  5. Step 5: Solve for x
    x = 857,058,343.25/28,430.83
  6. Step 6: Final answer
    x = 30,145.39

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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.