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Finding the Fourth Proportional to 30,457.41, 42,030.95 and 16,845.45

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Solution

The fourth proportional to 30,457.41, 42,030.95 and 16,845.45 is: 23,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457.41 : 42,030.95 = 16,845.45 : x
  2. Step 2: Convert to fraction form
    30,457.41/42,030.95 = 16,845.45/x
  3. Step 3: Cross multiply
    30,457.41x = 42,030.95 × 16,845.45
  4. Step 4: Simplify right side
    30,457.41x = 708,030,266.68
  5. Step 5: Solve for x
    x = 708,030,266.68/30,457.41
  6. Step 6: Final answer
    x = 23,246.57

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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.