Home / 28,088.36-42,133.40-12,285.26

Finding the Fourth Proportional to 28,088.36, 42,133.40 and 12,285.26

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Solution

The fourth proportional to 28,088.36, 42,133.40 and 12,285.26 is: 18,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.36 : 42,133.40 = 12,285.26 : x
  2. Step 2: Convert to fraction form
    28,088.36/42,133.40 = 12,285.26/x
  3. Step 3: Cross multiply
    28,088.36x = 42,133.40 × 12,285.26
  4. Step 4: Simplify right side
    28,088.36x = 517,619,501.59
  5. Step 5: Solve for x
    x = 517,619,501.59/28,088.36
  6. Step 6: Final answer
    x = 18,428.26

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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.