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Finding the Fourth Proportional to 19,303.18, 28,959.02 and 10,987.11

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Solution

The fourth proportional to 19,303.18, 28,959.02 and 10,987.11 is: 16,483.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,303.18 : 28,959.02 = 10,987.11 : x
  2. Step 2: Convert to fraction form
    19,303.18/28,959.02 = 10,987.11/x
  3. Step 3: Cross multiply
    19,303.18x = 28,959.02 × 10,987.11
  4. Step 4: Simplify right side
    19,303.18x = 318,175,938.23
  5. Step 5: Solve for x
    x = 318,175,938.23/19,303.18
  6. Step 6: Final answer
    x = 16,483.08

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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.