Home / 39,225.63-54,129.78-21,320.22

Finding the Fourth Proportional to 39,225.63, 54,129.78 and 21,320.22

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Solution

The fourth proportional to 39,225.63, 54,129.78 and 21,320.22 is: 29,421.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.63 : 54,129.78 = 21,320.22 : x
  2. Step 2: Convert to fraction form
    39,225.63/54,129.78 = 21,320.22/x
  3. Step 3: Cross multiply
    39,225.63x = 54,129.78 × 21,320.22
  4. Step 4: Simplify right side
    39,225.63x = 1,154,058,818.15
  5. Step 5: Solve for x
    x = 1,154,058,818.15/39,225.63
  6. Step 6: Final answer
    x = 29,421.04

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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.