Home / 13,355.77-18,429.34-7,386.63

Finding the Fourth Proportional to 13,355.77, 18,429.34 and 7,386.63

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Solution

The fourth proportional to 13,355.77, 18,429.34 and 7,386.63 is: 10,192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.77 : 18,429.34 = 7,386.63 : x
  2. Step 2: Convert to fraction form
    13,355.77/18,429.34 = 7,386.63/x
  3. Step 3: Cross multiply
    13,355.77x = 18,429.34 × 7,386.63
  4. Step 4: Simplify right side
    13,355.77x = 136,130,715.72
  5. Step 5: Solve for x
    x = 136,130,715.72/13,355.77
  6. Step 6: Final answer
    x = 10,192.65

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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.