Home / 28,077.89-38,712.47-17,989.74

Finding the Fourth Proportional to 28,077.89, 38,712.47 and 17,989.74

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Solution

The fourth proportional to 28,077.89, 38,712.47 and 17,989.74 is: 24,803.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.89 : 38,712.47 = 17,989.74 : x
  2. Step 2: Convert to fraction form
    28,077.89/38,712.47 = 17,989.74/x
  3. Step 3: Cross multiply
    28,077.89x = 38,712.47 × 17,989.74
  4. Step 4: Simplify right side
    28,077.89x = 696,427,180.11
  5. Step 5: Solve for x
    x = 696,427,180.11/28,077.89
  6. Step 6: Final answer
    x = 24,803.41

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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.