Home / 30,637.08-42,240.40-20,009.88

Finding the Fourth Proportional to 30,637.08, 42,240.40 and 20,009.88

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Solution

The fourth proportional to 30,637.08, 42,240.40 and 20,009.88 is: 27,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,637.08 : 42,240.40 = 20,009.88 : x
  2. Step 2: Convert to fraction form
    30,637.08/42,240.40 = 20,009.88/x
  3. Step 3: Cross multiply
    30,637.08x = 42,240.40 × 20,009.88
  4. Step 4: Simplify right side
    30,637.08x = 845,225,335.15
  5. Step 5: Solve for x
    x = 845,225,335.15/30,637.08
  6. Step 6: Final answer
    x = 27,588.31

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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.