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Finding the Fourth Proportional to 28,038.21, 42,045.02 and 10,495.74

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Solution

The fourth proportional to 28,038.21, 42,045.02 and 10,495.74 is: 15,739.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.21 : 42,045.02 = 10,495.74 : x
  2. Step 2: Convert to fraction form
    28,038.21/42,045.02 = 10,495.74/x
  3. Step 3: Cross multiply
    28,038.21x = 42,045.02 × 10,495.74
  4. Step 4: Simplify right side
    28,038.21x = 441,293,624.51
  5. Step 5: Solve for x
    x = 441,293,624.51/28,038.21
  6. Step 6: Final answer
    x = 15,739.01

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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.