Home / 28,870,123.71-39,840,769.59-15,817,877.67

Finding the Fourth Proportional to 28,870,123.71, 39,840,769.59 and 15,817,877.67

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Solution

The fourth proportional to 28,870,123.71, 39,840,769.59 and 15,817,877.67 is: 21,828,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870,123.71 : 39,840,769.59 = 15,817,877.67 : x
  2. Step 2: Convert to fraction form
    28,870,123.71/39,840,769.59 = 15,817,877.67/x
  3. Step 3: Cross multiply
    28,870,123.71x = 39,840,769.59 × 15,817,877.67
  4. Step 4: Simplify right side
    28,870,123.71x = 630,196,419,653,276.12
  5. Step 5: Solve for x
    x = 630,196,419,653,276.12/28,870,123.71
  6. Step 6: Final answer
    x = 21,828,670.57

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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.