Home / 15,302.16-21,124.80-9,638.64

Finding the Fourth Proportional to 15,302.16, 21,124.80 and 9,638.64

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Solution

The fourth proportional to 15,302.16, 21,124.80 and 9,638.64 is: 13,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.16 : 21,124.80 = 9,638.64 : x
  2. Step 2: Convert to fraction form
    15,302.16/21,124.80 = 9,638.64/x
  3. Step 3: Cross multiply
    15,302.16x = 21,124.80 × 9,638.64
  4. Step 4: Simplify right side
    15,302.16x = 203,614,342.27
  5. Step 5: Solve for x
    x = 203,614,342.27/15,302.16
  6. Step 6: Final answer
    x = 13,306.25

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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.