Home / 15,130.53-20,881.98-9,164.28

Finding the Fourth Proportional to 15,130.53, 20,881.98 and 9,164.28

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Solution

The fourth proportional to 15,130.53, 20,881.98 and 9,164.28 is: 12,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.53 : 20,881.98 = 9,164.28 : x
  2. Step 2: Convert to fraction form
    15,130.53/20,881.98 = 9,164.28/x
  3. Step 3: Cross multiply
    15,130.53x = 20,881.98 × 9,164.28
  4. Step 4: Simplify right side
    15,130.53x = 191,368,311.67
  5. Step 5: Solve for x
    x = 191,368,311.67/15,130.53
  6. Step 6: Final answer
    x = 12,647.83

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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.