Home / 21,312,089.60-31,968,134.40-21,123,132.80

Finding the Fourth Proportional to 21,312,089.60, 31,968,134.40 and 21,123,132.80

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Solution

The fourth proportional to 21,312,089.60, 31,968,134.40 and 21,123,132.80 is: 31,684,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,089.60 : 31,968,134.40 = 21,123,132.80 : x
  2. Step 2: Convert to fraction form
    21,312,089.60/31,968,134.40 = 21,123,132.80/x
  3. Step 3: Cross multiply
    21,312,089.60x = 31,968,134.40 × 21,123,132.80
  4. Step 4: Simplify right side
    21,312,089.60x = 675,267,148,299,448.25
  5. Step 5: Solve for x
    x = 675,267,148,299,448.25/21,312,089.60
  6. Step 6: Final answer
    x = 31,684,699.20

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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.