Home / 13,440.18-18,548.10-7,775.19

Finding the Fourth Proportional to 13,440.18, 18,548.10 and 7,775.19

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Solution

The fourth proportional to 13,440.18, 18,548.10 and 7,775.19 is: 10,730.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.18 : 18,548.10 = 7,775.19 : x
  2. Step 2: Convert to fraction form
    13,440.18/18,548.10 = 7,775.19/x
  3. Step 3: Cross multiply
    13,440.18x = 18,548.10 × 7,775.19
  4. Step 4: Simplify right side
    13,440.18x = 144,215,001.64
  5. Step 5: Solve for x
    x = 144,215,001.64/13,440.18
  6. Step 6: Final answer
    x = 10,730.14

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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.