Home / 42,621.06-63,929.28-13,038.90

Finding the Fourth Proportional to 42,621.06, 63,929.28 and 13,038.90

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Solution

The fourth proportional to 42,621.06, 63,929.28 and 13,038.90 is: 19,557.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,621.06 : 63,929.28 = 13,038.90 : x
  2. Step 2: Convert to fraction form
    42,621.06/63,929.28 = 13,038.90/x
  3. Step 3: Cross multiply
    42,621.06x = 63,929.28 × 13,038.90
  4. Step 4: Simplify right side
    42,621.06x = 833,567,488.99
  5. Step 5: Solve for x
    x = 833,567,488.99/42,621.06
  6. Step 6: Final answer
    x = 19,557.64

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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.