Home / 21,557.02-29,746.28-12,125.38

Finding the Fourth Proportional to 21,557.02, 29,746.28 and 12,125.38

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Solution

The fourth proportional to 21,557.02, 29,746.28 and 12,125.38 is: 16,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.02 : 29,746.28 = 12,125.38 : x
  2. Step 2: Convert to fraction form
    21,557.02/29,746.28 = 12,125.38/x
  3. Step 3: Cross multiply
    21,557.02x = 29,746.28 × 12,125.38
  4. Step 4: Simplify right side
    21,557.02x = 360,684,948.59
  5. Step 5: Solve for x
    x = 360,684,948.59/21,557.02
  6. Step 6: Final answer
    x = 16,731.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.