Home / 13,539.09-18,681.67-7,570.81

Finding the Fourth Proportional to 13,539.09, 18,681.67 and 7,570.81

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Solution

The fourth proportional to 13,539.09, 18,681.67 and 7,570.81 is: 10,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.09 : 18,681.67 = 7,570.81 : x
  2. Step 2: Convert to fraction form
    13,539.09/18,681.67 = 7,570.81/x
  3. Step 3: Cross multiply
    13,539.09x = 18,681.67 × 7,570.81
  4. Step 4: Simplify right side
    13,539.09x = 141,435,374.05
  5. Step 5: Solve for x
    x = 141,435,374.05/13,539.09
  6. Step 6: Final answer
    x = 10,446.45

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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.