Home / 31,547.18-43,534.80-18,122.64

Finding the Fourth Proportional to 31,547.18, 43,534.80 and 18,122.64

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Solution

The fourth proportional to 31,547.18, 43,534.80 and 18,122.64 is: 25,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.18 : 43,534.80 = 18,122.64 : x
  2. Step 2: Convert to fraction form
    31,547.18/43,534.80 = 18,122.64/x
  3. Step 3: Cross multiply
    31,547.18x = 43,534.80 × 18,122.64
  4. Step 4: Simplify right side
    31,547.18x = 788,965,507.87
  5. Step 5: Solve for x
    x = 788,965,507.87/31,547.18
  6. Step 6: Final answer
    x = 25,009.07

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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.