Home / 22,988.91-31,720.86-13,559.34

Finding the Fourth Proportional to 22,988.91, 31,720.86 and 13,559.34

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Solution

The fourth proportional to 22,988.91, 31,720.86 and 13,559.34 is: 18,709.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988.91 : 31,720.86 = 13,559.34 : x
  2. Step 2: Convert to fraction form
    22,988.91/31,720.86 = 13,559.34/x
  3. Step 3: Cross multiply
    22,988.91x = 31,720.86 × 13,559.34
  4. Step 4: Simplify right side
    22,988.91x = 430,113,925.83
  5. Step 5: Solve for x
    x = 430,113,925.83/22,988.91
  6. Step 6: Final answer
    x = 18,709.63

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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.