Home / 30,785.81-42,486.60-17,358.30

Finding the Fourth Proportional to 30,785.81, 42,486.60 and 17,358.30

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Solution

The fourth proportional to 30,785.81, 42,486.60 and 17,358.30 is: 23,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785.81 : 42,486.60 = 17,358.30 : x
  2. Step 2: Convert to fraction form
    30,785.81/42,486.60 = 17,358.30/x
  3. Step 3: Cross multiply
    30,785.81x = 42,486.60 × 17,358.30
  4. Step 4: Simplify right side
    30,785.81x = 737,495,148.78
  5. Step 5: Solve for x
    x = 737,495,148.78/30,785.81
  6. Step 6: Final answer
    x = 23,955.69

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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.