Home / 28,374.48-39,156.84-15,799.68

Finding the Fourth Proportional to 28,374.48, 39,156.84 and 15,799.68

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Solution

The fourth proportional to 28,374.48, 39,156.84 and 15,799.68 is: 21,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.48 : 39,156.84 = 15,799.68 : x
  2. Step 2: Convert to fraction form
    28,374.48/39,156.84 = 15,799.68/x
  3. Step 3: Cross multiply
    28,374.48x = 39,156.84 × 15,799.68
  4. Step 4: Simplify right side
    28,374.48x = 618,665,541.81
  5. Step 5: Solve for x
    x = 618,665,541.81/28,374.48
  6. Step 6: Final answer
    x = 21,803.59

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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.