Home / 31,560.76-43,547.80-18,986.32

Finding the Fourth Proportional to 31,560.76, 43,547.80 and 18,986.32

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Solution

The fourth proportional to 31,560.76, 43,547.80 and 18,986.32 is: 26,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,560.76 : 43,547.80 = 18,986.32 : x
  2. Step 2: Convert to fraction form
    31,560.76/43,547.80 = 18,986.32/x
  3. Step 3: Cross multiply
    31,560.76x = 43,547.80 × 18,986.32
  4. Step 4: Simplify right side
    31,560.76x = 826,812,466.10
  5. Step 5: Solve for x
    x = 826,812,466.10/31,560.76
  6. Step 6: Final answer
    x = 26,197.48

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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.