Home / 30,656.60-42,305.46-18,085.40

Finding the Fourth Proportional to 30,656.60, 42,305.46 and 18,085.40

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Solution

The fourth proportional to 30,656.60, 42,305.46 and 18,085.40 is: 24,957.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.60 : 42,305.46 = 18,085.40 : x
  2. Step 2: Convert to fraction form
    30,656.60/42,305.46 = 18,085.40/x
  3. Step 3: Cross multiply
    30,656.60x = 42,305.46 × 18,085.40
  4. Step 4: Simplify right side
    30,656.60x = 765,111,166.28
  5. Step 5: Solve for x
    x = 765,111,166.28/30,656.60
  6. Step 6: Final answer
    x = 24,957.47

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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.