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Finding the Fourth Proportional to 26,937.60, 40,406.40 and 10,521.60

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Solution

The fourth proportional to 26,937.60, 40,406.40 and 10,521.60 is: 15,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,937.60 : 40,406.40 = 10,521.60 : x
  2. Step 2: Convert to fraction form
    26,937.60/40,406.40 = 10,521.60/x
  3. Step 3: Cross multiply
    26,937.60x = 40,406.40 × 10,521.60
  4. Step 4: Simplify right side
    26,937.60x = 425,139,978.24
  5. Step 5: Solve for x
    x = 425,139,978.24/26,937.60
  6. Step 6: Final answer
    x = 15,782.40

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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.