Home / 28,600.40-42,897.96-9,878.72

Finding the Fourth Proportional to 28,600.40, 42,897.96 and 9,878.72

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Solution

The fourth proportional to 28,600.40, 42,897.96 and 9,878.72 is: 14,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.40 : 42,897.96 = 9,878.72 : x
  2. Step 2: Convert to fraction form
    28,600.40/42,897.96 = 9,878.72/x
  3. Step 3: Cross multiply
    28,600.40x = 42,897.96 × 9,878.72
  4. Step 4: Simplify right side
    28,600.40x = 423,776,935.41
  5. Step 5: Solve for x
    x = 423,776,935.41/28,600.40
  6. Step 6: Final answer
    x = 14,817.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.