Home / 31,547.40-43,533.96-18,109.20

Finding the Fourth Proportional to 31,547.40, 43,533.96 and 18,109.20

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Solution

The fourth proportional to 31,547.40, 43,533.96 and 18,109.20 is: 24,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.40 : 43,533.96 = 18,109.20 : x
  2. Step 2: Convert to fraction form
    31,547.40/43,533.96 = 18,109.20/x
  3. Step 3: Cross multiply
    31,547.40x = 43,533.96 × 18,109.20
  4. Step 4: Simplify right side
    31,547.40x = 788,365,188.43
  5. Step 5: Solve for x
    x = 788,365,188.43/31,547.40
  6. Step 6: Final answer
    x = 24,989.86

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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.