Home / 15,547.32-21,455.82-8,474.00

Finding the Fourth Proportional to 15,547.32, 21,455.82 and 8,474.00

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Solution

The fourth proportional to 15,547.32, 21,455.82 and 8,474.00 is: 11,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.32 : 21,455.82 = 8,474.00 : x
  2. Step 2: Convert to fraction form
    15,547.32/21,455.82 = 8,474.00/x
  3. Step 3: Cross multiply
    15,547.32x = 21,455.82 × 8,474.00
  4. Step 4: Simplify right side
    15,547.32x = 181,816,511.40
  5. Step 5: Solve for x
    x = 181,816,511.40/15,547.32
  6. Step 6: Final answer
    x = 11,694.40

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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.