Home / 19,158.40-28,737.60-9,316.90

Finding the Fourth Proportional to 19,158.40, 28,737.60 and 9,316.90

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Solution

The fourth proportional to 19,158.40, 28,737.60 and 9,316.90 is: 13,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.40 : 28,737.60 = 9,316.90 : x
  2. Step 2: Convert to fraction form
    19,158.40/28,737.60 = 9,316.90/x
  3. Step 3: Cross multiply
    19,158.40x = 28,737.60 × 9,316.90
  4. Step 4: Simplify right side
    19,158.40x = 267,745,345.44
  5. Step 5: Solve for x
    x = 267,745,345.44/19,158.40
  6. Step 6: Final answer
    x = 13,975.35

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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.