Home / 30,865.80-42,594.30-16,718.52

Finding the Fourth Proportional to 30,865.80, 42,594.30 and 16,718.52

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Solution

The fourth proportional to 30,865.80, 42,594.30 and 16,718.52 is: 23,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,865.80 : 42,594.30 = 16,718.52 : x
  2. Step 2: Convert to fraction form
    30,865.80/42,594.30 = 16,718.52/x
  3. Step 3: Cross multiply
    30,865.80x = 42,594.30 × 16,718.52
  4. Step 4: Simplify right side
    30,865.80x = 712,113,656.44
  5. Step 5: Solve for x
    x = 712,113,656.44/30,865.80
  6. Step 6: Final answer
    x = 23,071.28

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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.