Home / 14,312.34-19,750.77-7,938.72

Finding the Fourth Proportional to 14,312.34, 19,750.77 and 7,938.72

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Solution

The fourth proportional to 14,312.34, 19,750.77 and 7,938.72 is: 10,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,312.34 : 19,750.77 = 7,938.72 : x
  2. Step 2: Convert to fraction form
    14,312.34/19,750.77 = 7,938.72/x
  3. Step 3: Cross multiply
    14,312.34x = 19,750.77 × 7,938.72
  4. Step 4: Simplify right side
    14,312.34x = 156,795,832.81
  5. Step 5: Solve for x
    x = 156,795,832.81/14,312.34
  6. Step 6: Final answer
    x = 10,955.29

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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.