Home / 19,990.02-30,036.06-15,105.72

Finding the Fourth Proportional to 19,990.02, 30,036.06 and 15,105.72

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Solution

The fourth proportional to 19,990.02, 30,036.06 and 15,105.72 is: 22,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.02 : 30,036.06 = 15,105.72 : x
  2. Step 2: Convert to fraction form
    19,990.02/30,036.06 = 15,105.72/x
  3. Step 3: Cross multiply
    19,990.02x = 30,036.06 × 15,105.72
  4. Step 4: Simplify right side
    19,990.02x = 453,716,312.26
  5. Step 5: Solve for x
    x = 453,716,312.26/19,990.02
  6. Step 6: Final answer
    x = 22,697.14

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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.