Home / 13,538.41-18,681.47-7,569.88

Finding the Fourth Proportional to 13,538.41, 18,681.47 and 7,569.88

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Solution

The fourth proportional to 13,538.41, 18,681.47 and 7,569.88 is: 10,445.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.41 : 18,681.47 = 7,569.88 : x
  2. Step 2: Convert to fraction form
    13,538.41/18,681.47 = 7,569.88/x
  3. Step 3: Cross multiply
    13,538.41x = 18,681.47 × 7,569.88
  4. Step 4: Simplify right side
    13,538.41x = 141,416,486.12
  5. Step 5: Solve for x
    x = 141,416,486.12/13,538.41
  6. Step 6: Final answer
    x = 10,445.58

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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.