Home / 14,289.72-19,718.98-7,916.28

Finding the Fourth Proportional to 14,289.72, 19,718.98 and 7,916.28

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Solution

The fourth proportional to 14,289.72, 19,718.98 and 7,916.28 is: 10,924.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.72 : 19,718.98 = 7,916.28 : x
  2. Step 2: Convert to fraction form
    14,289.72/19,718.98 = 7,916.28/x
  3. Step 3: Cross multiply
    14,289.72x = 19,718.98 × 7,916.28
  4. Step 4: Simplify right side
    14,289.72x = 156,100,966.99
  5. Step 5: Solve for x
    x = 156,100,966.99/14,289.72
  6. Step 6: Final answer
    x = 10,924.00

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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.