Home / 30,685.04-42,347.56-18,750.66

Finding the Fourth Proportional to 30,685.04, 42,347.56 and 18,750.66

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Solution

The fourth proportional to 30,685.04, 42,347.56 and 18,750.66 is: 25,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.04 : 42,347.56 = 18,750.66 : x
  2. Step 2: Convert to fraction form
    30,685.04/42,347.56 = 18,750.66/x
  3. Step 3: Cross multiply
    30,685.04x = 42,347.56 × 18,750.66
  4. Step 4: Simplify right side
    30,685.04x = 794,044,699.39
  5. Step 5: Solve for x
    x = 794,044,699.39/30,685.04
  6. Step 6: Final answer
    x = 25,877.26

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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.