Home / 30,478.02-45,719.10-11,758.22

Finding the Fourth Proportional to 30,478.02, 45,719.10 and 11,758.22

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Solution

The fourth proportional to 30,478.02, 45,719.10 and 11,758.22 is: 17,638.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.02 : 45,719.10 = 11,758.22 : x
  2. Step 2: Convert to fraction form
    30,478.02/45,719.10 = 11,758.22/x
  3. Step 3: Cross multiply
    30,478.02x = 45,719.10 × 11,758.22
  4. Step 4: Simplify right side
    30,478.02x = 537,575,236.00
  5. Step 5: Solve for x
    x = 537,575,236.00/30,478.02
  6. Step 6: Final answer
    x = 17,638.13

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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.