Home / 30,567.47-42,190.61-18,637.38

Finding the Fourth Proportional to 30,567.47, 42,190.61 and 18,637.38

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Solution

The fourth proportional to 30,567.47, 42,190.61 and 18,637.38 is: 25,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.47 : 42,190.61 = 18,637.38 : x
  2. Step 2: Convert to fraction form
    30,567.47/42,190.61 = 18,637.38/x
  3. Step 3: Cross multiply
    30,567.47x = 42,190.61 × 18,637.38
  4. Step 4: Simplify right side
    30,567.47x = 786,322,337.81
  5. Step 5: Solve for x
    x = 786,322,337.81/30,567.47
  6. Step 6: Final answer
    x = 25,724.16

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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.