Home / 28,678.41-43,000.87-11,127.74

Finding the Fourth Proportional to 28,678.41, 43,000.87 and 11,127.74

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Solution

The fourth proportional to 28,678.41, 43,000.87 and 11,127.74 is: 16,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.41 : 43,000.87 = 11,127.74 : x
  2. Step 2: Convert to fraction form
    28,678.41/43,000.87 = 11,127.74/x
  3. Step 3: Cross multiply
    28,678.41x = 43,000.87 × 11,127.74
  4. Step 4: Simplify right side
    28,678.41x = 478,502,501.13
  5. Step 5: Solve for x
    x = 478,502,501.13/28,678.41
  6. Step 6: Final answer
    x = 16,685.11

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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.