Home / 28,262.76-38,981.07-20,706.36

Finding the Fourth Proportional to 28,262.76, 38,981.07 and 20,706.36

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Solution

The fourth proportional to 28,262.76, 38,981.07 and 20,706.36 is: 28,559.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.76 : 38,981.07 = 20,706.36 : x
  2. Step 2: Convert to fraction form
    28,262.76/38,981.07 = 20,706.36/x
  3. Step 3: Cross multiply
    28,262.76x = 38,981.07 × 20,706.36
  4. Step 4: Simplify right side
    28,262.76x = 807,156,068.61
  5. Step 5: Solve for x
    x = 807,156,068.61/28,262.76
  6. Step 6: Final answer
    x = 28,559.00

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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.