Home / 30,462.51-42,039.90-18,366.87

Finding the Fourth Proportional to 30,462.51, 42,039.90 and 18,366.87

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Solution

The fourth proportional to 30,462.51, 42,039.90 and 18,366.87 is: 25,347.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,462.51 : 42,039.90 = 18,366.87 : x
  2. Step 2: Convert to fraction form
    30,462.51/42,039.90 = 18,366.87/x
  3. Step 3: Cross multiply
    30,462.51x = 42,039.90 × 18,366.87
  4. Step 4: Simplify right side
    30,462.51x = 772,141,378.11
  5. Step 5: Solve for x
    x = 772,141,378.11/30,462.51
  6. Step 6: Final answer
    x = 25,347.27

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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.