Home / 30,928.41-42,681.05-16,781.25

Finding the Fourth Proportional to 30,928.41, 42,681.05 and 16,781.25

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Solution

The fourth proportional to 30,928.41, 42,681.05 and 16,781.25 is: 23,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.41 : 42,681.05 = 16,781.25 : x
  2. Step 2: Convert to fraction form
    30,928.41/42,681.05 = 16,781.25/x
  3. Step 3: Cross multiply
    30,928.41x = 42,681.05 × 16,781.25
  4. Step 4: Simplify right side
    30,928.41x = 716,241,436.55
  5. Step 5: Solve for x
    x = 716,241,436.55/30,928.41
  6. Step 6: Final answer
    x = 23,158.04

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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.