Home / 28,875.15-43,312.68-21,027.57

Finding the Fourth Proportional to 28,875.15, 43,312.68 and 21,027.57

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Solution

The fourth proportional to 28,875.15, 43,312.68 and 21,027.57 is: 31,541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.15 : 43,312.68 = 21,027.57 : x
  2. Step 2: Convert to fraction form
    28,875.15/43,312.68 = 21,027.57/x
  3. Step 3: Cross multiply
    28,875.15x = 43,312.68 × 21,027.57
  4. Step 4: Simplify right side
    28,875.15x = 910,760,410.59
  5. Step 5: Solve for x
    x = 910,760,410.59/28,875.15
  6. Step 6: Final answer
    x = 31,541.32

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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.