Home / 9,895.50-13,655.14-5,419.31

Finding the Fourth Proportional to 9,895.50, 13,655.14 and 5,419.31

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Solution

The fourth proportional to 9,895.50, 13,655.14 and 5,419.31 is: 7,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,895.50 : 13,655.14 = 5,419.31 : x
  2. Step 2: Convert to fraction form
    9,895.50/13,655.14 = 5,419.31/x
  3. Step 3: Cross multiply
    9,895.50x = 13,655.14 × 5,419.31
  4. Step 4: Simplify right side
    9,895.50x = 74,001,354.93
  5. Step 5: Solve for x
    x = 74,001,354.93/9,895.50
  6. Step 6: Final answer
    x = 7,478.28

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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.