Home / 30,663.36-45,878.40-18,947.52

Finding the Fourth Proportional to 30,663.36, 45,878.40 and 18,947.52

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Solution

The fourth proportional to 30,663.36, 45,878.40 and 18,947.52 is: 28,349.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.36 : 45,878.40 = 18,947.52 : x
  2. Step 2: Convert to fraction form
    30,663.36/45,878.40 = 18,947.52/x
  3. Step 3: Cross multiply
    30,663.36x = 45,878.40 × 18,947.52
  4. Step 4: Simplify right side
    30,663.36x = 869,281,901.57
  5. Step 5: Solve for x
    x = 869,281,901.57/30,663.36
  6. Step 6: Final answer
    x = 28,349.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.