Home / 28,060.64-42,088.08-17,640.80

Finding the Fourth Proportional to 28,060.64, 42,088.08 and 17,640.80

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Solution

The fourth proportional to 28,060.64, 42,088.08 and 17,640.80 is: 26,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.64 : 42,088.08 = 17,640.80 : x
  2. Step 2: Convert to fraction form
    28,060.64/42,088.08 = 17,640.80/x
  3. Step 3: Cross multiply
    28,060.64x = 42,088.08 × 17,640.80
  4. Step 4: Simplify right side
    28,060.64x = 742,467,401.66
  5. Step 5: Solve for x
    x = 742,467,401.66/28,060.64
  6. Step 6: Final answer
    x = 26,459.39

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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.