Home / 21,088.77-31,648.56-15,557.04

Finding the Fourth Proportional to 21,088.77, 31,648.56 and 15,557.04

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Solution

The fourth proportional to 21,088.77, 31,648.56 and 15,557.04 is: 23,346.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.77 : 31,648.56 = 15,557.04 : x
  2. Step 2: Convert to fraction form
    21,088.77/31,648.56 = 15,557.04/x
  3. Step 3: Cross multiply
    21,088.77x = 31,648.56 × 15,557.04
  4. Step 4: Simplify right side
    21,088.77x = 492,357,913.86
  5. Step 5: Solve for x
    x = 492,357,913.86/21,088.77
  6. Step 6: Final answer
    x = 23,346.92

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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.