Home / 10,639.63-14,688.98-9,457.29

Finding the Fourth Proportional to 10,639.63, 14,688.98 and 9,457.29

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Solution

The fourth proportional to 10,639.63, 14,688.98 and 9,457.29 is: 13,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.63 : 14,688.98 = 9,457.29 : x
  2. Step 2: Convert to fraction form
    10,639.63/14,688.98 = 9,457.29/x
  3. Step 3: Cross multiply
    10,639.63x = 14,688.98 × 9,457.29
  4. Step 4: Simplify right side
    10,639.63x = 138,917,931.84
  5. Step 5: Solve for x
    x = 138,917,931.84/10,639.63
  6. Step 6: Final answer
    x = 13,056.65

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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.