Home / 20,585.08-28,407.36-11,153.64

Finding the Fourth Proportional to 20,585.08, 28,407.36 and 11,153.64

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Solution

The fourth proportional to 20,585.08, 28,407.36 and 11,153.64 is: 15,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.08 : 28,407.36 = 11,153.64 : x
  2. Step 2: Convert to fraction form
    20,585.08/28,407.36 = 11,153.64/x
  3. Step 3: Cross multiply
    20,585.08x = 28,407.36 × 11,153.64
  4. Step 4: Simplify right side
    20,585.08x = 316,845,466.79
  5. Step 5: Solve for x
    x = 316,845,466.79/20,585.08
  6. Step 6: Final answer
    x = 15,392.00

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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.