Home / 13,537.60-18,681.76-7,569.20

Finding the Fourth Proportional to 13,537.60, 18,681.76 and 7,569.20

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Solution

The fourth proportional to 13,537.60, 18,681.76 and 7,569.20 is: 10,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.60 : 18,681.76 = 7,569.20 : x
  2. Step 2: Convert to fraction form
    13,537.60/18,681.76 = 7,569.20/x
  3. Step 3: Cross multiply
    13,537.60x = 18,681.76 × 7,569.20
  4. Step 4: Simplify right side
    13,537.60x = 141,405,977.79
  5. Step 5: Solve for x
    x = 141,405,977.79/13,537.60
  6. Step 6: Final answer
    x = 10,445.42

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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.