Home / 15,457.70-21,328.08-8,741.87

Finding the Fourth Proportional to 15,457.70, 21,328.08 and 8,741.87

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Solution

The fourth proportional to 15,457.70, 21,328.08 and 8,741.87 is: 12,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.70 : 21,328.08 = 8,741.87 : x
  2. Step 2: Convert to fraction form
    15,457.70/21,328.08 = 8,741.87/x
  3. Step 3: Cross multiply
    15,457.70x = 21,328.08 × 8,741.87
  4. Step 4: Simplify right side
    15,457.70x = 186,447,363.24
  5. Step 5: Solve for x
    x = 186,447,363.24/15,457.70
  6. Step 6: Final answer
    x = 12,061.78

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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.