Home / 29,334.95-40,428-20,837.39

Finding the Fourth Proportional to 29,334.95, 40,428 and 20,837.39

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Solution

The fourth proportional to 29,334.95, 40,428 and 20,837.39 is: 28,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,334.95 : 40,428 = 20,837.39 : x
  2. Step 2: Convert to fraction form
    29,334.95/40,428 = 20,837.39/x
  3. Step 3: Cross multiply
    29,334.95x = 40,428 × 20,837.39
  4. Step 4: Simplify right side
    29,334.95x = 842,413,800.78
  5. Step 5: Solve for x
    x = 842,413,800.78/29,334.95
  6. Step 6: Final answer
    x = 28,717.07

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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.