Home / 30,000.93-45,009.61-13,130.88

Finding the Fourth Proportional to 30,000.93, 45,009.61 and 13,130.88

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Solution

The fourth proportional to 30,000.93, 45,009.61 and 13,130.88 is: 19,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.93 : 45,009.61 = 13,130.88 : x
  2. Step 2: Convert to fraction form
    30,000.93/45,009.61 = 13,130.88/x
  3. Step 3: Cross multiply
    30,000.93x = 45,009.61 × 13,130.88
  4. Step 4: Simplify right side
    30,000.93x = 591,015,754.93
  5. Step 5: Solve for x
    x = 591,015,754.93/30,000.93
  6. Step 6: Final answer
    x = 19,699.91

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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.