Home / 13,354.34-18,428.66-7,385.87

Finding the Fourth Proportional to 13,354.34, 18,428.66 and 7,385.87

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Solution

The fourth proportional to 13,354.34, 18,428.66 and 7,385.87 is: 10,192.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.34 : 18,428.66 = 7,385.87 : x
  2. Step 2: Convert to fraction form
    13,354.34/18,428.66 = 7,385.87/x
  3. Step 3: Cross multiply
    13,354.34x = 18,428.66 × 7,385.87
  4. Step 4: Simplify right side
    13,354.34x = 136,111,696.18
  5. Step 5: Solve for x
    x = 136,111,696.18/13,354.34
  6. Step 6: Final answer
    x = 10,192.32

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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.