Home / 30,465.32-42,042.70-18,529.16

Finding the Fourth Proportional to 30,465.32, 42,042.70 and 18,529.16

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Solution

The fourth proportional to 30,465.32, 42,042.70 and 18,529.16 is: 25,570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,465.32 : 42,042.70 = 18,529.16 : x
  2. Step 2: Convert to fraction form
    30,465.32/42,042.70 = 18,529.16/x
  3. Step 3: Cross multiply
    30,465.32x = 42,042.70 × 18,529.16
  4. Step 4: Simplify right side
    30,465.32x = 779,015,915.13
  5. Step 5: Solve for x
    x = 779,015,915.13/30,465.32
  6. Step 6: Final answer
    x = 25,570.58

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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.