Home / 14,259.63-21,378.51-8,715.60

Finding the Fourth Proportional to 14,259.63, 21,378.51 and 8,715.60

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Solution

The fourth proportional to 14,259.63, 21,378.51 and 8,715.60 is: 13,066.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,259.63 : 21,378.51 = 8,715.60 : x
  2. Step 2: Convert to fraction form
    14,259.63/21,378.51 = 8,715.60/x
  3. Step 3: Cross multiply
    14,259.63x = 21,378.51 × 8,715.60
  4. Step 4: Simplify right side
    14,259.63x = 186,326,541.76
  5. Step 5: Solve for x
    x = 186,326,541.76/14,259.63
  6. Step 6: Final answer
    x = 13,066.72

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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.