Home / 15,547.86-21,455.73-8,474.22

Finding the Fourth Proportional to 15,547.86, 21,455.73 and 8,474.22

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Solution

The fourth proportional to 15,547.86, 21,455.73 and 8,474.22 is: 11,694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.86 : 21,455.73 = 8,474.22 : x
  2. Step 2: Convert to fraction form
    15,547.86/21,455.73 = 8,474.22/x
  3. Step 3: Cross multiply
    15,547.86x = 21,455.73 × 8,474.22
  4. Step 4: Simplify right side
    15,547.86x = 181,820,576.28
  5. Step 5: Solve for x
    x = 181,820,576.28/15,547.86
  6. Step 6: Final answer
    x = 11,694.25

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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.