Home / 15,013.08-20,718.18-8,298.60

Finding the Fourth Proportional to 15,013.08, 20,718.18 and 8,298.60

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Solution

The fourth proportional to 15,013.08, 20,718.18 and 8,298.60 is: 11,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.08 : 20,718.18 = 8,298.60 : x
  2. Step 2: Convert to fraction form
    15,013.08/20,718.18 = 8,298.60/x
  3. Step 3: Cross multiply
    15,013.08x = 20,718.18 × 8,298.60
  4. Step 4: Simplify right side
    15,013.08x = 171,931,888.55
  5. Step 5: Solve for x
    x = 171,931,888.55/15,013.08
  6. Step 6: Final answer
    x = 11,452.14

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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.