Home / 28,282.40-39,030.08-15,707.84

Finding the Fourth Proportional to 28,282.40, 39,030.08 and 15,707.84

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Solution

The fourth proportional to 28,282.40, 39,030.08 and 15,707.84 is: 21,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,282.40 : 39,030.08 = 15,707.84 : x
  2. Step 2: Convert to fraction form
    28,282.40/39,030.08 = 15,707.84/x
  3. Step 3: Cross multiply
    28,282.40x = 39,030.08 × 15,707.84
  4. Step 4: Simplify right side
    28,282.40x = 613,078,251.83
  5. Step 5: Solve for x
    x = 613,078,251.83/28,282.40
  6. Step 6: Final answer
    x = 21,677.02

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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.