Home / 30,437.95-45,660.57-12,905.50

Finding the Fourth Proportional to 30,437.95, 45,660.57 and 12,905.50

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Solution

The fourth proportional to 30,437.95, 45,660.57 and 12,905.50 is: 19,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,437.95 : 45,660.57 = 12,905.50 : x
  2. Step 2: Convert to fraction form
    30,437.95/45,660.57 = 12,905.50/x
  3. Step 3: Cross multiply
    30,437.95x = 45,660.57 × 12,905.50
  4. Step 4: Simplify right side
    30,437.95x = 589,272,486.14
  5. Step 5: Solve for x
    x = 589,272,486.14/30,437.95
  6. Step 6: Final answer
    x = 19,359.80

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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.