Home / 10,312.20-15,457.36-7,840.92

Finding the Fourth Proportional to 10,312.20, 15,457.36 and 7,840.92

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Solution

The fourth proportional to 10,312.20, 15,457.36 and 7,840.92 is: 11,753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.20 : 15,457.36 = 7,840.92 : x
  2. Step 2: Convert to fraction form
    10,312.20/15,457.36 = 7,840.92/x
  3. Step 3: Cross multiply
    10,312.20x = 15,457.36 × 7,840.92
  4. Step 4: Simplify right side
    10,312.20x = 121,199,923.17
  5. Step 5: Solve for x
    x = 121,199,923.17/10,312.20
  6. Step 6: Final answer
    x = 11,753.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.