Home / 13,218.60-19,821.36-6,547.32

Finding the Fourth Proportional to 13,218.60, 19,821.36 and 6,547.32

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Solution

The fourth proportional to 13,218.60, 19,821.36 and 6,547.32 is: 9,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.60 : 19,821.36 = 6,547.32 : x
  2. Step 2: Convert to fraction form
    13,218.60/19,821.36 = 6,547.32/x
  3. Step 3: Cross multiply
    13,218.60x = 19,821.36 × 6,547.32
  4. Step 4: Simplify right side
    13,218.60x = 129,776,786.76
  5. Step 5: Solve for x
    x = 129,776,786.76/13,218.60
  6. Step 6: Final answer
    x = 9,817.74

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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.