Home / 30,655.28-42,293.40-20,051.12

Finding the Fourth Proportional to 30,655.28, 42,293.40 and 20,051.12

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Solution

The fourth proportional to 30,655.28, 42,293.40 and 20,051.12 is: 27,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.28 : 42,293.40 = 20,051.12 : x
  2. Step 2: Convert to fraction form
    30,655.28/42,293.40 = 20,051.12/x
  3. Step 3: Cross multiply
    30,655.28x = 42,293.40 × 20,051.12
  4. Step 4: Simplify right side
    30,655.28x = 848,030,038.61
  5. Step 5: Solve for x
    x = 848,030,038.61/30,655.28
  6. Step 6: Final answer
    x = 27,663.42

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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.