Home / 9,913.89-13,681.36-5,437.38

Finding the Fourth Proportional to 9,913.89, 13,681.36 and 5,437.38

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Solution

The fourth proportional to 9,913.89, 13,681.36 and 5,437.38 is: 7,503.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.89 : 13,681.36 = 5,437.38 : x
  2. Step 2: Convert to fraction form
    9,913.89/13,681.36 = 5,437.38/x
  3. Step 3: Cross multiply
    9,913.89x = 13,681.36 × 5,437.38
  4. Step 4: Simplify right side
    9,913.89x = 74,390,753.24
  5. Step 5: Solve for x
    x = 74,390,753.24/9,913.89
  6. Step 6: Final answer
    x = 7,503.69

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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.