Home / 13,359.75-18,417.20-9,368.47

Finding the Fourth Proportional to 13,359.75, 18,417.20 and 9,368.47

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Solution

The fourth proportional to 13,359.75, 18,417.20 and 9,368.47 is: 12,914.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.75 : 18,417.20 = 9,368.47 : x
  2. Step 2: Convert to fraction form
    13,359.75/18,417.20 = 9,368.47/x
  3. Step 3: Cross multiply
    13,359.75x = 18,417.20 × 9,368.47
  4. Step 4: Simplify right side
    13,359.75x = 172,540,985.68
  5. Step 5: Solve for x
    x = 172,540,985.68/13,359.75
  6. Step 6: Final answer
    x = 12,914.99

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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.