Home / 28,502,368.91-42,738,173.39-12,931,699.20

Finding the Fourth Proportional to 28,502,368.91, 42,738,173.39 and 12,931,699.20

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Solution

The fourth proportional to 28,502,368.91, 42,738,173.39 and 12,931,699.20 is: 19,390,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502,368.91 : 42,738,173.39 = 12,931,699.20 : x
  2. Step 2: Convert to fraction form
    28,502,368.91/42,738,173.39 = 12,931,699.20/x
  3. Step 3: Cross multiply
    28,502,368.91x = 42,738,173.39 × 12,931,699.20
  4. Step 4: Simplify right side
    28,502,368.91x = 552,677,202,572,265.75
  5. Step 5: Solve for x
    x = 552,677,202,572,265.75/28,502,368.91
  6. Step 6: Final answer
    x = 19,390,570.81

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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.