Home / 14,386.72-19,856.64-8,421.52

Finding the Fourth Proportional to 14,386.72, 19,856.64 and 8,421.52

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Solution

The fourth proportional to 14,386.72, 19,856.64 and 8,421.52 is: 11,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,386.72 : 19,856.64 = 8,421.52 : x
  2. Step 2: Convert to fraction form
    14,386.72/19,856.64 = 8,421.52/x
  3. Step 3: Cross multiply
    14,386.72x = 19,856.64 × 8,421.52
  4. Step 4: Simplify right side
    14,386.72x = 167,223,090.89
  5. Step 5: Solve for x
    x = 167,223,090.89/14,386.72
  6. Step 6: Final answer
    x = 11,623.43

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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.