Home / 30,742.04-42,420.54-17,312.96

Finding the Fourth Proportional to 30,742.04, 42,420.54 and 17,312.96

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Solution

The fourth proportional to 30,742.04, 42,420.54 and 17,312.96 is: 23,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,742.04 : 42,420.54 = 17,312.96 : x
  2. Step 2: Convert to fraction form
    30,742.04/42,420.54 = 17,312.96/x
  3. Step 3: Cross multiply
    30,742.04x = 42,420.54 × 17,312.96
  4. Step 4: Simplify right side
    30,742.04x = 734,425,112.20
  5. Step 5: Solve for x
    x = 734,425,112.20/30,742.04
  6. Step 6: Final answer
    x = 23,889.93

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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.