Home / 15,454.30-21,302.04-12,091.72

Finding the Fourth Proportional to 15,454.30, 21,302.04 and 12,091.72

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Solution

The fourth proportional to 15,454.30, 21,302.04 and 12,091.72 is: 16,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.30 : 21,302.04 = 12,091.72 : x
  2. Step 2: Convert to fraction form
    15,454.30/21,302.04 = 12,091.72/x
  3. Step 3: Cross multiply
    15,454.30x = 21,302.04 × 12,091.72
  4. Step 4: Simplify right side
    15,454.30x = 257,578,303.11
  5. Step 5: Solve for x
    x = 257,578,303.11/15,454.30
  6. Step 6: Final answer
    x = 16,667.10

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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.