Home / 15,538.47-21,442.35-8,464.87

Finding the Fourth Proportional to 15,538.47, 21,442.35 and 8,464.87

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Solution

The fourth proportional to 15,538.47, 21,442.35 and 8,464.87 is: 11,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.47 : 21,442.35 = 8,464.87 : x
  2. Step 2: Convert to fraction form
    15,538.47/21,442.35 = 8,464.87/x
  3. Step 3: Cross multiply
    15,538.47x = 21,442.35 × 8,464.87
  4. Step 4: Simplify right side
    15,538.47x = 181,506,705.24
  5. Step 5: Solve for x
    x = 181,506,705.24/15,538.47
  6. Step 6: Final answer
    x = 11,681.12

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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.