Home / 13,328.98-18,356.58-13,038.32

Finding the Fourth Proportional to 13,328.98, 18,356.58 and 13,038.32

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Solution

The fourth proportional to 13,328.98, 18,356.58 and 13,038.32 is: 17,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.98 : 18,356.58 = 13,038.32 : x
  2. Step 2: Convert to fraction form
    13,328.98/18,356.58 = 13,038.32/x
  3. Step 3: Cross multiply
    13,328.98x = 18,356.58 × 13,038.32
  4. Step 4: Simplify right side
    13,328.98x = 239,338,964.15
  5. Step 5: Solve for x
    x = 239,338,964.15/13,328.98
  6. Step 6: Final answer
    x = 17,956.29

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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.