Home / 10,656.40-15,988.44-4,808.56

Finding the Fourth Proportional to 10,656.40, 15,988.44 and 4,808.56

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Solution

The fourth proportional to 10,656.40, 15,988.44 and 4,808.56 is: 7,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.40 : 15,988.44 = 4,808.56 : x
  2. Step 2: Convert to fraction form
    10,656.40/15,988.44 = 4,808.56/x
  3. Step 3: Cross multiply
    10,656.40x = 15,988.44 × 4,808.56
  4. Step 4: Simplify right side
    10,656.40x = 76,881,373.05
  5. Step 5: Solve for x
    x = 76,881,373.05/10,656.40
  6. Step 6: Final answer
    x = 7,214.57

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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.