Home / 30,741.02-42,423.40-17,312.78

Finding the Fourth Proportional to 30,741.02, 42,423.40 and 17,312.78

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Solution

The fourth proportional to 30,741.02, 42,423.40 and 17,312.78 is: 23,892.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,741.02 : 42,423.40 = 17,312.78 : x
  2. Step 2: Convert to fraction form
    30,741.02/42,423.40 = 17,312.78/x
  3. Step 3: Cross multiply
    30,741.02x = 42,423.40 × 17,312.78
  4. Step 4: Simplify right side
    30,741.02x = 734,466,991.05
  5. Step 5: Solve for x
    x = 734,466,991.05/30,741.02
  6. Step 6: Final answer
    x = 23,892.08

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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.