Home / 30,979.02-42,749.65-17,550

Finding the Fourth Proportional to 30,979.02, 42,749.65 and 17,550

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Solution

The fourth proportional to 30,979.02, 42,749.65 and 17,550 is: 24,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.02 : 42,749.65 = 17,550 : x
  2. Step 2: Convert to fraction form
    30,979.02/42,749.65 = 17,550/x
  3. Step 3: Cross multiply
    30,979.02x = 42,749.65 × 17,550
  4. Step 4: Simplify right side
    30,979.02x = 750,256,357.50
  5. Step 5: Solve for x
    x = 750,256,357.50/30,979.02
  6. Step 6: Final answer
    x = 24,218.21

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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.