Home / 12,587.95-17,389.08-11,923.66

Finding the Fourth Proportional to 12,587.95, 17,389.08 and 11,923.66

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Solution

The fourth proportional to 12,587.95, 17,389.08 and 11,923.66 is: 16,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.95 : 17,389.08 = 11,923.66 : x
  2. Step 2: Convert to fraction form
    12,587.95/17,389.08 = 11,923.66/x
  3. Step 3: Cross multiply
    12,587.95x = 17,389.08 × 11,923.66
  4. Step 4: Simplify right side
    12,587.95x = 207,341,477.63
  5. Step 5: Solve for x
    x = 207,341,477.63/12,587.95
  6. Step 6: Final answer
    x = 16,471.43

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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.