Home / 28,989.01-43,478.28-13,190.32

Finding the Fourth Proportional to 28,989.01, 43,478.28 and 13,190.32

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Solution

The fourth proportional to 28,989.01, 43,478.28 and 13,190.32 is: 19,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.01 : 43,478.28 = 13,190.32 : x
  2. Step 2: Convert to fraction form
    28,989.01/43,478.28 = 13,190.32/x
  3. Step 3: Cross multiply
    28,989.01x = 43,478.28 × 13,190.32
  4. Step 4: Simplify right side
    28,989.01x = 573,492,426.25
  5. Step 5: Solve for x
    x = 573,492,426.25/28,989.01
  6. Step 6: Final answer
    x = 19,783.10

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1.5x scale

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.