Home / 21,263.05-31,898.88-11,916.40

Finding the Fourth Proportional to 21,263.05, 31,898.88 and 11,916.40

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Solution

The fourth proportional to 21,263.05, 31,898.88 and 11,916.40 is: 17,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.05 : 31,898.88 = 11,916.40 : x
  2. Step 2: Convert to fraction form
    21,263.05/31,898.88 = 11,916.40/x
  3. Step 3: Cross multiply
    21,263.05x = 31,898.88 × 11,916.40
  4. Step 4: Simplify right side
    21,263.05x = 380,119,813.63
  5. Step 5: Solve for x
    x = 380,119,813.63/21,263.05
  6. Step 6: Final answer
    x = 17,877.01

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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.