Home / 39,038.75-53,873.50-21,133.76

Finding the Fourth Proportional to 39,038.75, 53,873.50 and 21,133.76

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Solution

The fourth proportional to 39,038.75, 53,873.50 and 21,133.76 is: 29,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.75 : 53,873.50 = 21,133.76 : x
  2. Step 2: Convert to fraction form
    39,038.75/53,873.50 = 21,133.76/x
  3. Step 3: Cross multiply
    39,038.75x = 53,873.50 × 21,133.76
  4. Step 4: Simplify right side
    39,038.75x = 1,138,549,428.86
  5. Step 5: Solve for x
    x = 1,138,549,428.86/39,038.75
  6. Step 6: Final answer
    x = 29,164.59

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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.