Home / 28,213.32-38,916.74-18,154.86

Finding the Fourth Proportional to 28,213.32, 38,916.74 and 18,154.86

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Solution

The fourth proportional to 28,213.32, 38,916.74 and 18,154.86 is: 25,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.32 : 38,916.74 = 18,154.86 : x
  2. Step 2: Convert to fraction form
    28,213.32/38,916.74 = 18,154.86/x
  3. Step 3: Cross multiply
    28,213.32x = 38,916.74 × 18,154.86
  4. Step 4: Simplify right side
    28,213.32x = 706,527,966.36
  5. Step 5: Solve for x
    x = 706,527,966.36/28,213.32
  6. Step 6: Final answer
    x = 25,042.35

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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.