Home / 21,132.64-29,155.44-12,746.08

Finding the Fourth Proportional to 21,132.64, 29,155.44 and 12,746.08

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Solution

The fourth proportional to 21,132.64, 29,155.44 and 12,746.08 is: 17,585.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.64 : 29,155.44 = 12,746.08 : x
  2. Step 2: Convert to fraction form
    21,132.64/29,155.44 = 12,746.08/x
  3. Step 3: Cross multiply
    21,132.64x = 29,155.44 × 12,746.08
  4. Step 4: Simplify right side
    21,132.64x = 371,617,570.68
  5. Step 5: Solve for x
    x = 371,617,570.68/21,132.64
  6. Step 6: Final answer
    x = 17,585.00

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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.