Home / 28,560.89-39,412.72-15,813.17

Finding the Fourth Proportional to 28,560.89, 39,412.72 and 15,813.17

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Solution

The fourth proportional to 28,560.89, 39,412.72 and 15,813.17 is: 21,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.89 : 39,412.72 = 15,813.17 : x
  2. Step 2: Convert to fraction form
    28,560.89/39,412.72 = 15,813.17/x
  3. Step 3: Cross multiply
    28,560.89x = 39,412.72 × 15,813.17
  4. Step 4: Simplify right side
    28,560.89x = 623,240,041.52
  5. Step 5: Solve for x
    x = 623,240,041.52/28,560.89
  6. Step 6: Final answer
    x = 21,821.45

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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.