Home / 20,730.04-28,607.40-11,298.68

Finding the Fourth Proportional to 20,730.04, 28,607.40 and 11,298.68

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Solution

The fourth proportional to 20,730.04, 28,607.40 and 11,298.68 is: 15,592.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.04 : 28,607.40 = 11,298.68 : x
  2. Step 2: Convert to fraction form
    20,730.04/28,607.40 = 11,298.68/x
  3. Step 3: Cross multiply
    20,730.04x = 28,607.40 × 11,298.68
  4. Step 4: Simplify right side
    20,730.04x = 323,225,858.23
  5. Step 5: Solve for x
    x = 323,225,858.23/20,730.04
  6. Step 6: Final answer
    x = 15,592.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.