Home / 13,355.04-18,429.20-7,386.32

Finding the Fourth Proportional to 13,355.04, 18,429.20 and 7,386.32

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Solution

The fourth proportional to 13,355.04, 18,429.20 and 7,386.32 is: 10,192.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.04 : 18,429.20 = 7,386.32 : x
  2. Step 2: Convert to fraction form
    13,355.04/18,429.20 = 7,386.32/x
  3. Step 3: Cross multiply
    13,355.04x = 18,429.20 × 7,386.32
  4. Step 4: Simplify right side
    13,355.04x = 136,123,968.54
  5. Step 5: Solve for x
    x = 136,123,968.54/13,355.04
  6. Step 6: Final answer
    x = 10,192.70

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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.