Home / 12,543.15-17,309.64-8,564.16

Finding the Fourth Proportional to 12,543.15, 17,309.64 and 8,564.16

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Solution

The fourth proportional to 12,543.15, 17,309.64 and 8,564.16 is: 11,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.15 : 17,309.64 = 8,564.16 : x
  2. Step 2: Convert to fraction form
    12,543.15/17,309.64 = 8,564.16/x
  3. Step 3: Cross multiply
    12,543.15x = 17,309.64 × 8,564.16
  4. Step 4: Simplify right side
    12,543.15x = 148,242,526.50
  5. Step 5: Solve for x
    x = 148,242,526.50/12,543.15
  6. Step 6: Final answer
    x = 11,818.60

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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.