Home / 15,430.10-21,293.54-8,715.74

Finding the Fourth Proportional to 15,430.10, 21,293.54 and 8,715.74

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Solution

The fourth proportional to 15,430.10, 21,293.54 and 8,715.74 is: 12,027.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.10 : 21,293.54 = 8,715.74 : x
  2. Step 2: Convert to fraction form
    15,430.10/21,293.54 = 8,715.74/x
  3. Step 3: Cross multiply
    15,430.10x = 21,293.54 × 8,715.74
  4. Step 4: Simplify right side
    15,430.10x = 185,588,958.32
  5. Step 5: Solve for x
    x = 185,588,958.32/15,430.10
  6. Step 6: Final answer
    x = 12,027.72

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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.