Home / 15,530.83-21,431.89-8,457.23

Finding the Fourth Proportional to 15,530.83, 21,431.89 and 8,457.23

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Solution

The fourth proportional to 15,530.83, 21,431.89 and 8,457.23 is: 11,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.83 : 21,431.89 = 8,457.23 : x
  2. Step 2: Convert to fraction form
    15,530.83/21,431.89 = 8,457.23/x
  3. Step 3: Cross multiply
    15,530.83x = 21,431.89 × 8,457.23
  4. Step 4: Simplify right side
    15,530.83x = 181,254,423.06
  5. Step 5: Solve for x
    x = 181,254,423.06/15,530.83
  6. Step 6: Final answer
    x = 11,670.62

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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.