Home / 13,485.47-18,602.33-8,440.94

Finding the Fourth Proportional to 13,485.47, 18,602.33 and 8,440.94

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Solution

The fourth proportional to 13,485.47, 18,602.33 and 8,440.94 is: 11,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.47 : 18,602.33 = 8,440.94 : x
  2. Step 2: Convert to fraction form
    13,485.47/18,602.33 = 8,440.94/x
  3. Step 3: Cross multiply
    13,485.47x = 18,602.33 × 8,440.94
  4. Step 4: Simplify right side
    13,485.47x = 157,021,058.38
  5. Step 5: Solve for x
    x = 157,021,058.38/13,485.47
  6. Step 6: Final answer
    x = 11,643.72

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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.