Home / 13,455.12-18,567.96-7,487.16

Finding the Fourth Proportional to 13,455.12, 18,567.96 and 7,487.16

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Solution

The fourth proportional to 13,455.12, 18,567.96 and 7,487.16 is: 10,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.12 : 18,567.96 = 7,487.16 : x
  2. Step 2: Convert to fraction form
    13,455.12/18,567.96 = 7,487.16/x
  3. Step 3: Cross multiply
    13,455.12x = 18,567.96 × 7,487.16
  4. Step 4: Simplify right side
    13,455.12x = 139,021,287.39
  5. Step 5: Solve for x
    x = 139,021,287.39/13,455.12
  6. Step 6: Final answer
    x = 10,332.22

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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.