Home / 42,620.64-63,931.16-13,038.36

Finding the Fourth Proportional to 42,620.64, 63,931.16 and 13,038.36

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Solution

The fourth proportional to 42,620.64, 63,931.16 and 13,038.36 is: 19,557.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620.64 : 63,931.16 = 13,038.36 : x
  2. Step 2: Convert to fraction form
    42,620.64/63,931.16 = 13,038.36/x
  3. Step 3: Cross multiply
    42,620.64x = 63,931.16 × 13,038.36
  4. Step 4: Simplify right side
    42,620.64x = 833,557,479.30
  5. Step 5: Solve for x
    x = 833,557,479.30/42,620.64
  6. Step 6: Final answer
    x = 19,557.60

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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.