Home / 30,689.13-42,346.62-17,259.87

Finding the Fourth Proportional to 30,689.13, 42,346.62 and 17,259.87

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Solution

The fourth proportional to 30,689.13, 42,346.62 and 17,259.87 is: 23,816.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,689.13 : 42,346.62 = 17,259.87 : x
  2. Step 2: Convert to fraction form
    30,689.13/42,346.62 = 17,259.87/x
  3. Step 3: Cross multiply
    30,689.13x = 42,346.62 × 17,259.87
  4. Step 4: Simplify right side
    30,689.13x = 730,897,156.14
  5. Step 5: Solve for x
    x = 730,897,156.14/30,689.13
  6. Step 6: Final answer
    x = 23,816.16

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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.