Home / 13,457.46-18,555.45-9,210.57

Finding the Fourth Proportional to 13,457.46, 18,555.45 and 9,210.57

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Solution

The fourth proportional to 13,457.46, 18,555.45 and 9,210.57 is: 12,699.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.46 : 18,555.45 = 9,210.57 : x
  2. Step 2: Convert to fraction form
    13,457.46/18,555.45 = 9,210.57/x
  3. Step 3: Cross multiply
    13,457.46x = 18,555.45 × 9,210.57
  4. Step 4: Simplify right side
    13,457.46x = 170,906,271.11
  5. Step 5: Solve for x
    x = 170,906,271.11/13,457.46
  6. Step 6: Final answer
    x = 12,699.74

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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.