Home / 13,903.13-19,186.79-7,615.91

Finding the Fourth Proportional to 13,903.13, 19,186.79 and 7,615.91

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Solution

The fourth proportional to 13,903.13, 19,186.79 and 7,615.91 is: 10,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.13 : 19,186.79 = 7,615.91 : x
  2. Step 2: Convert to fraction form
    13,903.13/19,186.79 = 7,615.91/x
  3. Step 3: Cross multiply
    13,903.13x = 19,186.79 × 7,615.91
  4. Step 4: Simplify right side
    13,903.13x = 146,124,731.82
  5. Step 5: Solve for x
    x = 146,124,731.82/13,903.13
  6. Step 6: Final answer
    x = 10,510.21

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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.