Home / 14,147.86-19,518.60-10,787.20

Finding the Fourth Proportional to 14,147.86, 19,518.60 and 10,787.20

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Solution

The fourth proportional to 14,147.86, 19,518.60 and 10,787.20 is: 14,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.86 : 19,518.60 = 10,787.20 : x
  2. Step 2: Convert to fraction form
    14,147.86/19,518.60 = 10,787.20/x
  3. Step 3: Cross multiply
    14,147.86x = 19,518.60 × 10,787.20
  4. Step 4: Simplify right side
    14,147.86x = 210,551,041.92
  5. Step 5: Solve for x
    x = 210,551,041.92/14,147.86
  6. Step 6: Final answer
    x = 14,882.18

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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.