Home / 19,810.40-27,345.48-13,518.32

Finding the Fourth Proportional to 19,810.40, 27,345.48 and 13,518.32

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Solution

The fourth proportional to 19,810.40, 27,345.48 and 13,518.32 is: 18,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.40 : 27,345.48 = 13,518.32 : x
  2. Step 2: Convert to fraction form
    19,810.40/27,345.48 = 13,518.32/x
  3. Step 3: Cross multiply
    19,810.40x = 27,345.48 × 13,518.32
  4. Step 4: Simplify right side
    19,810.40x = 369,664,949.19
  5. Step 5: Solve for x
    x = 369,664,949.19/19,810.40
  6. Step 6: Final answer
    x = 18,660.15

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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.