Home / 28,307.84-39,063.74-15,733.40

Finding the Fourth Proportional to 28,307.84, 39,063.74 and 15,733.40

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Solution

The fourth proportional to 28,307.84, 39,063.74 and 15,733.40 is: 21,711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.84 : 39,063.74 = 15,733.40 : x
  2. Step 2: Convert to fraction form
    28,307.84/39,063.74 = 15,733.40/x
  3. Step 3: Cross multiply
    28,307.84x = 39,063.74 × 15,733.40
  4. Step 4: Simplify right side
    28,307.84x = 614,605,446.92
  5. Step 5: Solve for x
    x = 614,605,446.92/28,307.84
  6. Step 6: Final answer
    x = 21,711.49

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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.