Home / 28,645.02-39,560.16-19,715.58

Finding the Fourth Proportional to 28,645.02, 39,560.16 and 19,715.58

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Solution

The fourth proportional to 28,645.02, 39,560.16 and 19,715.58 is: 27,228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.02 : 39,560.16 = 19,715.58 : x
  2. Step 2: Convert to fraction form
    28,645.02/39,560.16 = 19,715.58/x
  3. Step 3: Cross multiply
    28,645.02x = 39,560.16 × 19,715.58
  4. Step 4: Simplify right side
    28,645.02x = 779,951,499.29
  5. Step 5: Solve for x
    x = 779,951,499.29/28,645.02
  6. Step 6: Final answer
    x = 27,228.17

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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.