Home / 30,746.58-42,433.47-18,817.86

Finding the Fourth Proportional to 30,746.58, 42,433.47 and 18,817.86

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Solution

The fourth proportional to 30,746.58, 42,433.47 and 18,817.86 is: 25,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,746.58 : 42,433.47 = 18,817.86 : x
  2. Step 2: Convert to fraction form
    30,746.58/42,433.47 = 18,817.86/x
  3. Step 3: Cross multiply
    30,746.58x = 42,433.47 × 18,817.86
  4. Step 4: Simplify right side
    30,746.58x = 798,507,097.77
  5. Step 5: Solve for x
    x = 798,507,097.77/30,746.58
  6. Step 6: Final answer
    x = 25,970.60

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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.