Home / 10,312.04-14,217.53-8,421.71

Finding the Fourth Proportional to 10,312.04, 14,217.53 and 8,421.71

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Solution

The fourth proportional to 10,312.04, 14,217.53 and 8,421.71 is: 11,611.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.04 : 14,217.53 = 8,421.71 : x
  2. Step 2: Convert to fraction form
    10,312.04/14,217.53 = 8,421.71/x
  3. Step 3: Cross multiply
    10,312.04x = 14,217.53 × 8,421.71
  4. Step 4: Simplify right side
    10,312.04x = 119,735,801.38
  5. Step 5: Solve for x
    x = 119,735,801.38/10,312.04
  6. Step 6: Final answer
    x = 11,611.26

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Half scale
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Double scale
Find fourth proportional to 10,313.04, 14,218.90 and 8,422.71
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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.