Home / 28,262.84-39,003.36-15,688.40

Finding the Fourth Proportional to 28,262.84, 39,003.36 and 15,688.40

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Solution

The fourth proportional to 28,262.84, 39,003.36 and 15,688.40 is: 21,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.84 : 39,003.36 = 15,688.40 : x
  2. Step 2: Convert to fraction form
    28,262.84/39,003.36 = 15,688.40/x
  3. Step 3: Cross multiply
    28,262.84x = 39,003.36 × 15,688.40
  4. Step 4: Simplify right side
    28,262.84x = 611,900,313.02
  5. Step 5: Solve for x
    x = 611,900,313.02/28,262.84
  6. Step 6: Final answer
    x = 21,650.35

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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.