Home / 15,716.70-21,689.40-8,547.02

Finding the Fourth Proportional to 15,716.70, 21,689.40 and 8,547.02

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Solution

The fourth proportional to 15,716.70, 21,689.40 and 8,547.02 is: 11,795.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.70 : 21,689.40 = 8,547.02 : x
  2. Step 2: Convert to fraction form
    15,716.70/21,689.40 = 8,547.02/x
  3. Step 3: Cross multiply
    15,716.70x = 21,689.40 × 8,547.02
  4. Step 4: Simplify right side
    15,716.70x = 185,379,735.59
  5. Step 5: Solve for x
    x = 185,379,735.59/15,716.70
  6. Step 6: Final answer
    x = 11,795.08

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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.