Home / 13,538.09-18,680.29-7,569.81

Finding the Fourth Proportional to 13,538.09, 18,680.29 and 7,569.81

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Solution

The fourth proportional to 13,538.09, 18,680.29 and 7,569.81 is: 10,445.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.09 : 18,680.29 = 7,569.81 : x
  2. Step 2: Convert to fraction form
    13,538.09/18,680.29 = 7,569.81/x
  3. Step 3: Cross multiply
    13,538.09x = 18,680.29 × 7,569.81
  4. Step 4: Simplify right side
    13,538.09x = 141,406,227.12
  5. Step 5: Solve for x
    x = 141,406,227.12/13,538.09
  6. Step 6: Final answer
    x = 10,445.06

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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.