Home / 26,276.10-39,438.45-13,137.90

Finding the Fourth Proportional to 26,276.10, 39,438.45 and 13,137.90

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Solution

The fourth proportional to 26,276.10, 39,438.45 and 13,137.90 is: 19,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,276.10 : 39,438.45 = 13,137.90 : x
  2. Step 2: Convert to fraction form
    26,276.10/39,438.45 = 13,137.90/x
  3. Step 3: Cross multiply
    26,276.10x = 39,438.45 × 13,137.90
  4. Step 4: Simplify right side
    26,276.10x = 518,138,412.26
  5. Step 5: Solve for x
    x = 518,138,412.26/26,276.10
  6. Step 6: Final answer
    x = 19,719.00

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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.