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Finding the Fourth Proportional to 30,466.60, 42,047.74 and 17,038.60

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Solution

The fourth proportional to 30,466.60, 42,047.74 and 17,038.60 is: 23,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,466.60 : 42,047.74 = 17,038.60 : x
  2. Step 2: Convert to fraction form
    30,466.60/42,047.74 = 17,038.60/x
  3. Step 3: Cross multiply
    30,466.60x = 42,047.74 × 17,038.60
  4. Step 4: Simplify right side
    30,466.60x = 716,434,622.76
  5. Step 5: Solve for x
    x = 716,434,622.76/30,466.60
  6. Step 6: Final answer
    x = 23,515.41

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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.