Home / 69,031.24-103,534.71-18,430.90

Finding the Fourth Proportional to 69,031.24, 103,534.71 and 18,430.90

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Solution

The fourth proportional to 69,031.24, 103,534.71 and 18,430.90 is: 27,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,031.24 : 103,534.71 = 18,430.90 : x
  2. Step 2: Convert to fraction form
    69,031.24/103,534.71 = 18,430.90/x
  3. Step 3: Cross multiply
    69,031.24x = 103,534.71 × 18,430.90
  4. Step 4: Simplify right side
    69,031.24x = 1,908,237,368.87
  5. Step 5: Solve for x
    x = 1,908,237,368.87/69,031.24
  6. Step 6: Final answer
    x = 27,643.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.