Home / 30,444.40-45,666.60-18,780.40

Finding the Fourth Proportional to 30,444.40, 45,666.60 and 18,780.40

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Solution

The fourth proportional to 30,444.40, 45,666.60 and 18,780.40 is: 28,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,444.40 : 45,666.60 = 18,780.40 : x
  2. Step 2: Convert to fraction form
    30,444.40/45,666.60 = 18,780.40/x
  3. Step 3: Cross multiply
    30,444.40x = 45,666.60 × 18,780.40
  4. Step 4: Simplify right side
    30,444.40x = 857,637,014.64
  5. Step 5: Solve for x
    x = 857,637,014.64/30,444.40
  6. Step 6: Final answer
    x = 28,170.60

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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.