Home / 30,291.72-45,444.78-9,515.22

Finding the Fourth Proportional to 30,291.72, 45,444.78 and 9,515.22

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Solution

The fourth proportional to 30,291.72, 45,444.78 and 9,515.22 is: 14,275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.72 : 45,444.78 = 9,515.22 : x
  2. Step 2: Convert to fraction form
    30,291.72/45,444.78 = 9,515.22/x
  3. Step 3: Cross multiply
    30,291.72x = 45,444.78 × 9,515.22
  4. Step 4: Simplify right side
    30,291.72x = 432,417,079.55
  5. Step 5: Solve for x
    x = 432,417,079.55/30,291.72
  6. Step 6: Final answer
    x = 14,275.09

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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.