Home / 40,038.72-55,253.43-21,889.51

Finding the Fourth Proportional to 40,038.72, 55,253.43 and 21,889.51

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Solution

The fourth proportional to 40,038.72, 55,253.43 and 21,889.51 is: 30,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,038.72 : 55,253.43 = 21,889.51 : x
  2. Step 2: Convert to fraction form
    40,038.72/55,253.43 = 21,889.51/x
  3. Step 3: Cross multiply
    40,038.72x = 55,253.43 × 21,889.51
  4. Step 4: Simplify right side
    40,038.72x = 1,209,470,508.52
  5. Step 5: Solve for x
    x = 1,209,470,508.52/40,038.72
  6. Step 6: Final answer
    x = 30,207.52

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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.