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Finding the Fourth Proportional to 18,557.64, 27,803.97 and 15,457.50

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Solution

The fourth proportional to 18,557.64, 27,803.97 and 15,457.50 is: 23,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,557.64 : 27,803.97 = 15,457.50 : x
  2. Step 2: Convert to fraction form
    18,557.64/27,803.97 = 15,457.50/x
  3. Step 3: Cross multiply
    18,557.64x = 27,803.97 × 15,457.50
  4. Step 4: Simplify right side
    18,557.64x = 429,779,866.28
  5. Step 5: Solve for x
    x = 429,779,866.28/18,557.64
  6. Step 6: Final answer
    x = 23,159.19

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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.