Home / 13,858.12-19,124.13-7,570.45

Finding the Fourth Proportional to 13,858.12, 19,124.13 and 7,570.45

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Solution

The fourth proportional to 13,858.12, 19,124.13 and 7,570.45 is: 10,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.12 : 19,124.13 = 7,570.45 : x
  2. Step 2: Convert to fraction form
    13,858.12/19,124.13 = 7,570.45/x
  3. Step 3: Cross multiply
    13,858.12x = 19,124.13 × 7,570.45
  4. Step 4: Simplify right side
    13,858.12x = 144,778,269.96
  5. Step 5: Solve for x
    x = 144,778,269.96/13,858.12
  6. Step 6: Final answer
    x = 10,447.18

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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.