Home / 30,631.93-42,271.55-17,019.68

Finding the Fourth Proportional to 30,631.93, 42,271.55 and 17,019.68

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Solution

The fourth proportional to 30,631.93, 42,271.55 and 17,019.68 is: 23,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.93 : 42,271.55 = 17,019.68 : x
  2. Step 2: Convert to fraction form
    30,631.93/42,271.55 = 17,019.68/x
  3. Step 3: Cross multiply
    30,631.93x = 42,271.55 × 17,019.68
  4. Step 4: Simplify right side
    30,631.93x = 719,448,169.01
  5. Step 5: Solve for x
    x = 719,448,169.01/30,631.93
  6. Step 6: Final answer
    x = 23,486.87

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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.