Home / 28,875.28-43,312.92-21,027.72

Finding the Fourth Proportional to 28,875.28, 43,312.92 and 21,027.72

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Solution

The fourth proportional to 28,875.28, 43,312.92 and 21,027.72 is: 31,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.28 : 43,312.92 = 21,027.72 : x
  2. Step 2: Convert to fraction form
    28,875.28/43,312.92 = 21,027.72/x
  3. Step 3: Cross multiply
    28,875.28x = 43,312.92 × 21,027.72
  4. Step 4: Simplify right side
    28,875.28x = 910,771,954.14
  5. Step 5: Solve for x
    x = 910,771,954.14/28,875.28
  6. Step 6: Final answer
    x = 31,541.58

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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.