Home / 30,683.64-42,342.69-20,073.05

Finding the Fourth Proportional to 30,683.64, 42,342.69 and 20,073.05

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Solution

The fourth proportional to 30,683.64, 42,342.69 and 20,073.05 is: 27,700.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,683.64 : 42,342.69 = 20,073.05 : x
  2. Step 2: Convert to fraction form
    30,683.64/42,342.69 = 20,073.05/x
  3. Step 3: Cross multiply
    30,683.64x = 42,342.69 × 20,073.05
  4. Step 4: Simplify right side
    30,683.64x = 849,946,955.85
  5. Step 5: Solve for x
    x = 849,946,955.85/30,683.64
  6. Step 6: Final answer
    x = 27,700.33

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Double scale
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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.