Home / 19,937.21-27,502.74-13,130.15

Finding the Fourth Proportional to 19,937.21, 27,502.74 and 13,130.15

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Solution

The fourth proportional to 19,937.21, 27,502.74 and 13,130.15 is: 18,112.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.21 : 27,502.74 = 13,130.15 : x
  2. Step 2: Convert to fraction form
    19,937.21/27,502.74 = 13,130.15/x
  3. Step 3: Cross multiply
    19,937.21x = 27,502.74 × 13,130.15
  4. Step 4: Simplify right side
    19,937.21x = 361,114,964.10
  5. Step 5: Solve for x
    x = 361,114,964.10/19,937.21
  6. Step 6: Final answer
    x = 18,112.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.