Home / 30,988.18-42,762.05-17,559.60

Finding the Fourth Proportional to 30,988.18, 42,762.05 and 17,559.60

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Solution

The fourth proportional to 30,988.18, 42,762.05 and 17,559.60 is: 24,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,988.18 : 42,762.05 = 17,559.60 : x
  2. Step 2: Convert to fraction form
    30,988.18/42,762.05 = 17,559.60/x
  3. Step 3: Cross multiply
    30,988.18x = 42,762.05 × 17,559.60
  4. Step 4: Simplify right side
    30,988.18x = 750,884,191.57
  5. Step 5: Solve for x
    x = 750,884,191.57/30,988.18
  6. Step 6: Final answer
    x = 24,231.31

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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.