Home / 43,154.56-64,638.15-20,921.28

Finding the Fourth Proportional to 43,154.56, 64,638.15 and 20,921.28

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Solution

The fourth proportional to 43,154.56, 64,638.15 and 20,921.28 is: 31,336.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,154.56 : 64,638.15 = 20,921.28 : x
  2. Step 2: Convert to fraction form
    43,154.56/64,638.15 = 20,921.28/x
  3. Step 3: Cross multiply
    43,154.56x = 64,638.15 × 20,921.28
  4. Step 4: Simplify right side
    43,154.56x = 1,352,312,834.83
  5. Step 5: Solve for x
    x = 1,352,312,834.83/43,154.56
  6. Step 6: Final answer
    x = 31,336.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.