Home / 26,985.75-40,478.28-12,184.31

Finding the Fourth Proportional to 26,985.75, 40,478.28 and 12,184.31

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Solution

The fourth proportional to 26,985.75, 40,478.28 and 12,184.31 is: 18,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,985.75 : 40,478.28 = 12,184.31 : x
  2. Step 2: Convert to fraction form
    26,985.75/40,478.28 = 12,184.31/x
  3. Step 3: Cross multiply
    26,985.75x = 40,478.28 × 12,184.31
  4. Step 4: Simplify right side
    26,985.75x = 493,199,967.29
  5. Step 5: Solve for x
    x = 493,199,967.29/26,985.75
  6. Step 6: Final answer
    x = 18,276.31

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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.