Home / 19,165.02-28,743.21-5,315.10

Finding the Fourth Proportional to 19,165.02, 28,743.21 and 5,315.10

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Solution

The fourth proportional to 19,165.02, 28,743.21 and 5,315.10 is: 7,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.02 : 28,743.21 = 5,315.10 : x
  2. Step 2: Convert to fraction form
    19,165.02/28,743.21 = 5,315.10/x
  3. Step 3: Cross multiply
    19,165.02x = 28,743.21 × 5,315.10
  4. Step 4: Simplify right side
    19,165.02x = 152,773,035.47
  5. Step 5: Solve for x
    x = 152,773,035.47/19,165.02
  6. Step 6: Final answer
    x = 7,971.45

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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.