Home / 15,362.40-21,201.18-8,557.32

Finding the Fourth Proportional to 15,362.40, 21,201.18 and 8,557.32

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Solution

The fourth proportional to 15,362.40, 21,201.18 and 8,557.32 is: 11,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.40 : 21,201.18 = 8,557.32 : x
  2. Step 2: Convert to fraction form
    15,362.40/21,201.18 = 8,557.32/x
  3. Step 3: Cross multiply
    15,362.40x = 21,201.18 × 8,557.32
  4. Step 4: Simplify right side
    15,362.40x = 181,425,281.64
  5. Step 5: Solve for x
    x = 181,425,281.64/15,362.40
  6. Step 6: Final answer
    x = 11,809.70

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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.