Home / 28,526.84-39,366.20-15,780.53

Finding the Fourth Proportional to 28,526.84, 39,366.20 and 15,780.53

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Solution

The fourth proportional to 28,526.84, 39,366.20 and 15,780.53 is: 21,776.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.84 : 39,366.20 = 15,780.53 : x
  2. Step 2: Convert to fraction form
    28,526.84/39,366.20 = 15,780.53/x
  3. Step 3: Cross multiply
    28,526.84x = 39,366.20 × 15,780.53
  4. Step 4: Simplify right side
    28,526.84x = 621,219,224.35
  5. Step 5: Solve for x
    x = 621,219,224.35/28,526.84
  6. Step 6: Final answer
    x = 21,776.66

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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.