Home / 10,921.16-15,060.12-8,925.32

Finding the Fourth Proportional to 10,921.16, 15,060.12 and 8,925.32

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Solution

The fourth proportional to 10,921.16, 15,060.12 and 8,925.32 is: 12,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.16 : 15,060.12 = 8,925.32 : x
  2. Step 2: Convert to fraction form
    10,921.16/15,060.12 = 8,925.32/x
  3. Step 3: Cross multiply
    10,921.16x = 15,060.12 × 8,925.32
  4. Step 4: Simplify right side
    10,921.16x = 134,416,390.24
  5. Step 5: Solve for x
    x = 134,416,390.24/10,921.16
  6. Step 6: Final answer
    x = 12,307.89

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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.