Home / 15,167.56-20,931.28-8,795.40

Finding the Fourth Proportional to 15,167.56, 20,931.28 and 8,795.40

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Solution

The fourth proportional to 15,167.56, 20,931.28 and 8,795.40 is: 12,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.56 : 20,931.28 = 8,795.40 : x
  2. Step 2: Convert to fraction form
    15,167.56/20,931.28 = 8,795.40/x
  3. Step 3: Cross multiply
    15,167.56x = 20,931.28 × 8,795.40
  4. Step 4: Simplify right side
    15,167.56x = 184,098,980.11
  5. Step 5: Solve for x
    x = 184,098,980.11/15,167.56
  6. Step 6: Final answer
    x = 12,137.68

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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.