Home / 28,298.84-39,051.30-15,724.40

Finding the Fourth Proportional to 28,298.84, 39,051.30 and 15,724.40

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Solution

The fourth proportional to 28,298.84, 39,051.30 and 15,724.40 is: 21,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,298.84 : 39,051.30 = 15,724.40 : x
  2. Step 2: Convert to fraction form
    28,298.84/39,051.30 = 15,724.40/x
  3. Step 3: Cross multiply
    28,298.84x = 39,051.30 × 15,724.40
  4. Step 4: Simplify right side
    28,298.84x = 614,058,261.72
  5. Step 5: Solve for x
    x = 614,058,261.72/28,298.84
  6. Step 6: Final answer
    x = 21,699.06

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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.