Home / 28,903.20-43,341.12-13,322.40

Finding the Fourth Proportional to 28,903.20, 43,341.12 and 13,322.40

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Solution

The fourth proportional to 28,903.20, 43,341.12 and 13,322.40 is: 19,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.20 : 43,341.12 = 13,322.40 : x
  2. Step 2: Convert to fraction form
    28,903.20/43,341.12 = 13,322.40/x
  3. Step 3: Cross multiply
    28,903.20x = 43,341.12 × 13,322.40
  4. Step 4: Simplify right side
    28,903.20x = 577,407,737.09
  5. Step 5: Solve for x
    x = 577,407,737.09/28,903.20
  6. Step 6: Final answer
    x = 19,977.29

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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.