Home / 21,256.19-29,210.41-20,280.54

Finding the Fourth Proportional to 21,256.19, 29,210.41 and 20,280.54

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Solution

The fourth proportional to 21,256.19, 29,210.41 and 20,280.54 is: 27,869.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.19 : 29,210.41 = 20,280.54 : x
  2. Step 2: Convert to fraction form
    21,256.19/29,210.41 = 20,280.54/x
  3. Step 3: Cross multiply
    21,256.19x = 29,210.41 × 20,280.54
  4. Step 4: Simplify right side
    21,256.19x = 592,403,023.31
  5. Step 5: Solve for x
    x = 592,403,023.31/21,256.19
  6. Step 6: Final answer
    x = 27,869.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.