Home / 39,030.36-53,861.56-21,125.21

Finding the Fourth Proportional to 39,030.36, 53,861.56 and 21,125.21

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Solution

The fourth proportional to 39,030.36, 53,861.56 and 21,125.21 is: 29,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,030.36 : 53,861.56 = 21,125.21 : x
  2. Step 2: Convert to fraction form
    39,030.36/53,861.56 = 21,125.21/x
  3. Step 3: Cross multiply
    39,030.36x = 53,861.56 × 21,125.21
  4. Step 4: Simplify right side
    39,030.36x = 1,137,836,443.81
  5. Step 5: Solve for x
    x = 1,137,836,443.81/39,030.36
  6. Step 6: Final answer
    x = 29,152.60

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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.