Home / 19,783.08-29,680.86-8,699.10

Finding the Fourth Proportional to 19,783.08, 29,680.86 and 8,699.10

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Solution

The fourth proportional to 19,783.08, 29,680.86 and 8,699.10 is: 13,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.08 : 29,680.86 = 8,699.10 : x
  2. Step 2: Convert to fraction form
    19,783.08/29,680.86 = 8,699.10/x
  3. Step 3: Cross multiply
    19,783.08x = 29,680.86 × 8,699.10
  4. Step 4: Simplify right side
    19,783.08x = 258,196,769.23
  5. Step 5: Solve for x
    x = 258,196,769.23/19,783.08
  6. Step 6: Final answer
    x = 13,051.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.